From d03a853bb0370d89552eceee59df1746da4a37f8 Mon Sep 17 00:00:00 2001 From: Mike Hommey Date: Sun, 1 Mar 2009 10:53:23 +0100 Subject: Import upstream version 2.7.0 --- uri.c | 3216 +++++++++++++++++++++++++++++++++-------------------------------- 1 file changed, 1618 insertions(+), 1598 deletions(-) (limited to 'uri.c') diff --git a/uri.c b/uri.c index fafd112..28401c8 100644 --- a/uri.c +++ b/uri.c @@ -1,7 +1,7 @@ /** * uri.c: set of generic URI related routines * - * Reference: RFCs 2396, 2732 and 2373 + * Reference: RFCs 3986, 2732 and 2373 * * See Copyright for the status of this software. * @@ -18,14 +18,10 @@ #include #include -/************************************************************************ - * * - * Macros to differentiate various character type * - * directly extracted from RFC 2396 * - * * - ************************************************************************/ +static void xmlCleanURI(xmlURIPtr uri); /* + * Old rule from 2396 used in legacy handling code * alpha = lowalpha | upalpha */ #define IS_ALPHA(x) (IS_LOWALPHA(x) || IS_UPALPHA(x)) @@ -60,32 +56,31 @@ #define IS_ALPHANUM(x) (IS_ALPHA(x) || IS_DIGIT(x)) -/* - * hex = digit | "A" | "B" | "C" | "D" | "E" | "F" | - * "a" | "b" | "c" | "d" | "e" | "f" - */ - -#define IS_HEX(x) ((IS_DIGIT(x)) || (((x) >= 'a') && ((x) <= 'f')) || \ - (((x) >= 'A') && ((x) <= 'F'))) - /* * mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")" */ -#define IS_MARK(x) (((x) == '-') || ((x) == '_') || ((x) == '.') || \ - ((x) == '!') || ((x) == '~') || ((x) == '*') || ((x) == '\'') || \ +#define IS_MARK(x) (((x) == '-') || ((x) == '_') || ((x) == '.') || \ + ((x) == '!') || ((x) == '~') || ((x) == '*') || ((x) == '\'') || \ ((x) == '(') || ((x) == ')')) +/* + * unwise = "{" | "}" | "|" | "\" | "^" | "`" + */ +#define IS_UNWISE(p) \ + (((*(p) == '{')) || ((*(p) == '}')) || ((*(p) == '|')) || \ + ((*(p) == '\\')) || ((*(p) == '^')) || ((*(p) == '[')) || \ + ((*(p) == ']')) || ((*(p) == '`'))) /* * reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" | "$" | "," | - * "[" | "]" + * "[" | "]" */ -#define IS_RESERVED(x) (((x) == ';') || ((x) == '/') || ((x) == '?') || \ - ((x) == ':') || ((x) == '@') || ((x) == '&') || ((x) == '=') || \ - ((x) == '+') || ((x) == '$') || ((x) == ',') || ((x) == '[') || \ - ((x) == ']')) +#define IS_RESERVED(x) (((x) == ';') || ((x) == '/') || ((x) == '?') || \ + ((x) == ':') || ((x) == '@') || ((x) == '&') || ((x) == '=') || \ + ((x) == '+') || ((x) == '$') || ((x) == ',') || ((x) == '[') || \ + ((x) == ']')) /* * unreserved = alphanum | mark @@ -94,1808 +89,1833 @@ #define IS_UNRESERVED(x) (IS_ALPHANUM(x) || IS_MARK(x)) /* - * escaped = "%" hex hex + * Skip to next pointer char, handle escaped sequences */ -#define IS_ESCAPED(p) ((*(p) == '%') && (IS_HEX((p)[1])) && \ - (IS_HEX((p)[2]))) +#define NEXT(p) ((*p == '%')? p += 3 : p++) /* - * uric_no_slash = unreserved | escaped | ";" | "?" | ":" | "@" | - * "&" | "=" | "+" | "$" | "," + * Productions from the spec. + * + * authority = server | reg_name + * reg_name = 1*( unreserved | escaped | "$" | "," | + * ";" | ":" | "@" | "&" | "=" | "+" ) + * + * path = [ abs_path | opaque_part ] */ -#define IS_URIC_NO_SLASH(p) ((IS_UNRESERVED(*(p))) || (IS_ESCAPED(p)) ||\ - ((*(p) == ';')) || ((*(p) == '?')) || ((*(p) == ':')) ||\ - ((*(p) == '@')) || ((*(p) == '&')) || ((*(p) == '=')) ||\ - ((*(p) == '+')) || ((*(p) == '$')) || ((*(p) == ','))) + +#define STRNDUP(s, n) (char *) xmlStrndup((const xmlChar *)(s), (n)) + +/************************************************************************ + * * + * RFC 3986 parser * + * * + ************************************************************************/ + +#define ISA_DIGIT(p) ((*(p) >= '0') && (*(p) <= '9')) +#define ISA_ALPHA(p) (((*(p) >= 'a') && (*(p) <= 'z')) || \ + ((*(p) >= 'A') && (*(p) <= 'Z'))) +#define ISA_HEXDIG(p) \ + (ISA_DIGIT(p) || ((*(p) >= 'a') && (*(p) <= 'f')) || \ + ((*(p) >= 'A') && (*(p) <= 'F'))) /* - * pchar = unreserved | escaped | ":" | "@" | "&" | "=" | "+" | "$" | "," + * sub-delims = "!" / "$" / "&" / "'" / "(" / ")" + * / "*" / "+" / "," / ";" / "=" */ -#define IS_PCHAR(p) ((IS_UNRESERVED(*(p))) || (IS_ESCAPED(p)) || \ - ((*(p) == ':')) || ((*(p) == '@')) || ((*(p) == '&')) ||\ - ((*(p) == '=')) || ((*(p) == '+')) || ((*(p) == '$')) ||\ - ((*(p) == ','))) +#define ISA_SUB_DELIM(p) \ + (((*(p) == '!')) || ((*(p) == '$')) || ((*(p) == '&')) || \ + ((*(p) == '(')) || ((*(p) == ')')) || ((*(p) == '*')) || \ + ((*(p) == '+')) || ((*(p) == ',')) || ((*(p) == ';')) || \ + ((*(p) == '='))) /* - * rel_segment = 1*( unreserved | escaped | - * ";" | "@" | "&" | "=" | "+" | "$" | "," ) + * gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@" */ - -#define IS_SEGMENT(p) ((IS_UNRESERVED(*(p))) || (IS_ESCAPED(p)) || \ - ((*(p) == ';')) || ((*(p) == '@')) || ((*(p) == '&')) || \ - ((*(p) == '=')) || ((*(p) == '+')) || ((*(p) == '$')) || \ - ((*(p) == ','))) +#define ISA_GEN_DELIM(p) \ + (((*(p) == ':')) || ((*(p) == '/')) || ((*(p) == '?')) || \ + ((*(p) == '#')) || ((*(p) == '[')) || ((*(p) == ']')) || \ + ((*(p) == '@'))) /* - * scheme = alpha *( alpha | digit | "+" | "-" | "." ) + * reserved = gen-delims / sub-delims */ - -#define IS_SCHEME(x) ((IS_ALPHA(x)) || (IS_DIGIT(x)) || \ - ((x) == '+') || ((x) == '-') || ((x) == '.')) +#define ISA_RESERVED(p) (ISA_GEN_DELIM(p) || (ISA_SUB_DELIM(p))) /* - * reg_name = 1*( unreserved | escaped | "$" | "," | - * ";" | ":" | "@" | "&" | "=" | "+" ) + * unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~" */ - -#define IS_REG_NAME(p) ((IS_UNRESERVED(*(p))) || (IS_ESCAPED(p)) || \ - ((*(p) == '$')) || ((*(p) == ',')) || ((*(p) == ';')) || \ - ((*(p) == ':')) || ((*(p) == '@')) || ((*(p) == '&')) || \ - ((*(p) == '=')) || ((*(p) == '+'))) +#define ISA_UNRESERVED(p) \ + ((ISA_ALPHA(p)) || (ISA_DIGIT(p)) || ((*(p) == '-')) || \ + ((*(p) == '.')) || ((*(p) == '_')) || ((*(p) == '~'))) /* - * userinfo = *( unreserved | escaped | ";" | ":" | "&" | "=" | - * "+" | "$" | "," ) + * pct-encoded = "%" HEXDIG HEXDIG */ -#define IS_USERINFO(p) ((IS_UNRESERVED(*(p))) || (IS_ESCAPED(p)) || \ - ((*(p) == ';')) || ((*(p) == ':')) || ((*(p) == '&')) || \ - ((*(p) == '=')) || ((*(p) == '+')) || ((*(p) == '$')) || \ - ((*(p) == ','))) +#define ISA_PCT_ENCODED(p) \ + ((*(p) == '%') && (ISA_HEXDIG(p + 1)) && (ISA_HEXDIG(p + 2))) /* - * uric = reserved | unreserved | escaped + * pchar = unreserved / pct-encoded / sub-delims / ":" / "@" */ +#define ISA_PCHAR(p) \ + (ISA_UNRESERVED(p) || ISA_PCT_ENCODED(p) || ISA_SUB_DELIM(p) || \ + ((*(p) == ':')) || ((*(p) == '@'))) -#define IS_URIC(p) ((IS_UNRESERVED(*(p))) || (IS_ESCAPED(p)) || \ - (IS_RESERVED(*(p)))) +/** + * xmlParse3986Scheme: + * @uri: pointer to an URI structure + * @str: pointer to the string to analyze + * + * Parse an URI scheme + * + * ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) + * + * Returns 0 or the error code + */ +static int +xmlParse3986Scheme(xmlURIPtr uri, const char **str) { + const char *cur; -/* -* unwise = "{" | "}" | "|" | "\" | "^" | "`" -*/ + if (str == NULL) + return(-1); -#define IS_UNWISE(p) \ - (((*(p) == '{')) || ((*(p) == '}')) || ((*(p) == '|')) || \ - ((*(p) == '\\')) || ((*(p) == '^')) || ((*(p) == '[')) || \ - ((*(p) == ']')) || ((*(p) == '`'))) + cur = *str; + if (!ISA_ALPHA(cur)) + return(2); + cur++; + while (ISA_ALPHA(cur) || ISA_DIGIT(cur) || + (*cur == '+') || (*cur == '-') || (*cur == '.')) cur++; + if (uri != NULL) { + if (uri->scheme != NULL) xmlFree(uri->scheme); + uri->scheme = STRNDUP(*str, cur - *str); + } + *str = cur; + return(0); +} -/* - * Skip to next pointer char, handle escaped sequences +/** + * xmlParse3986Fragment: + * @uri: pointer to an URI structure + * @str: pointer to the string to analyze + * + * Parse the query part of an URI + * + * fragment = *( pchar / "/" / "?" ) + * NOTE: the strict syntax as defined by 3986 does not allow '[' and ']' + * in the fragment identifier but this is used very broadly for + * xpointer scheme selection, so we are allowing it here to not break + * for example all the DocBook processing chains. + * + * Returns 0 or the error code */ +static int +xmlParse3986Fragment(xmlURIPtr uri, const char **str) +{ + const char *cur; -#define NEXT(p) ((*p == '%')? p += 3 : p++) + if (str == NULL) + return (-1); -/* - * Productions from the spec. + cur = *str; + + while ((ISA_PCHAR(cur)) || (*cur == '/') || (*cur == '?') || + (*cur == '[') || (*cur == ']') || + ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) + NEXT(cur); + if (uri != NULL) { + if (uri->fragment != NULL) + xmlFree(uri->fragment); + if (uri->cleanup & 2) + uri->fragment = STRNDUP(*str, cur - *str); + else + uri->fragment = xmlURIUnescapeString(*str, cur - *str, NULL); + } + *str = cur; + return (0); +} + +/** + * xmlParse3986Query: + * @uri: pointer to an URI structure + * @str: pointer to the string to analyze * - * authority = server | reg_name - * reg_name = 1*( unreserved | escaped | "$" | "," | - * ";" | ":" | "@" | "&" | "=" | "+" ) + * Parse the query part of an URI * - * path = [ abs_path | opaque_part ] + * query = *uric + * + * Returns 0 or the error code */ +static int +xmlParse3986Query(xmlURIPtr uri, const char **str) +{ + const char *cur; -#define STRNDUP(s, n) (char *) xmlStrndup((const xmlChar *)(s), (n)) + if (str == NULL) + return (-1); -/************************************************************************ - * * - * Generic URI structure functions * - * * - ************************************************************************/ + cur = *str; + + while ((ISA_PCHAR(cur)) || (*cur == '/') || (*cur == '?') || + ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) + NEXT(cur); + if (uri != NULL) { + if (uri->query != NULL) + xmlFree(uri->query); + if (uri->cleanup & 2) + uri->query = STRNDUP(*str, cur - *str); + else + uri->query = xmlURIUnescapeString(*str, cur - *str, NULL); + + /* Save the raw bytes of the query as well. + * See: http://mail.gnome.org/archives/xml/2007-April/thread.html#00114 + */ + if (uri->query_raw != NULL) + xmlFree (uri->query_raw); + uri->query_raw = STRNDUP (*str, cur - *str); + } + *str = cur; + return (0); +} /** - * xmlCreateURI: + * xmlParse3986Port: + * @uri: pointer to an URI structure + * @str: the string to analyze * - * Simply creates an empty xmlURI + * Parse a port part and fills in the appropriate fields + * of the @uri structure * - * Returns the new structure or NULL in case of error + * port = *DIGIT + * + * Returns 0 or the error code */ -xmlURIPtr -xmlCreateURI(void) { - xmlURIPtr ret; +static int +xmlParse3986Port(xmlURIPtr uri, const char **str) +{ + const char *cur = *str; - ret = (xmlURIPtr) xmlMalloc(sizeof(xmlURI)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlCreateURI: out of memory\n"); - return(NULL); + if (ISA_DIGIT(cur)) { + if (uri != NULL) + uri->port = 0; + while (ISA_DIGIT(cur)) { + if (uri != NULL) + uri->port = uri->port * 10 + (*cur - '0'); + cur++; + } + *str = cur; + return(0); } - memset(ret, 0, sizeof(xmlURI)); - return(ret); + return(1); } /** - * xmlSaveUri: - * @uri: pointer to an xmlURI + * xmlParse3986Userinfo: + * @uri: pointer to an URI structure + * @str: the string to analyze * - * Save the URI as an escaped string + * Parse an user informations part and fills in the appropriate fields + * of the @uri structure * - * Returns a new string (to be deallocated by caller) + * userinfo = *( unreserved / pct-encoded / sub-delims / ":" ) + * + * Returns 0 or the error code */ -xmlChar * -xmlSaveUri(xmlURIPtr uri) { - xmlChar *ret = NULL; - const char *p; - int len; - int max; +static int +xmlParse3986Userinfo(xmlURIPtr uri, const char **str) +{ + const char *cur; - if (uri == NULL) return(NULL); + cur = *str; + while (ISA_UNRESERVED(cur) || ISA_PCT_ENCODED(cur) || + ISA_SUB_DELIM(cur) || (*cur == ':')) + NEXT(cur); + if (*cur == '@') { + if (uri != NULL) { + if (uri->user != NULL) xmlFree(uri->user); + if (uri->cleanup & 2) + uri->user = STRNDUP(*str, cur - *str); + else + uri->user = xmlURIUnescapeString(*str, cur - *str, NULL); + } + *str = cur; + return(0); + } + return(1); +} +/** + * xmlParse3986DecOctet: + * @str: the string to analyze + * + * dec-octet = DIGIT ; 0-9 + * / %x31-39 DIGIT ; 10-99 + * / "1" 2DIGIT ; 100-199 + * / "2" %x30-34 DIGIT ; 200-249 + * / "25" %x30-35 ; 250-255 + * + * Skip a dec-octet. + * + * Returns 0 if found and skipped, 1 otherwise + */ +static int +xmlParse3986DecOctet(const char **str) { + const char *cur = *str; - max = 80; - ret = (xmlChar *) xmlMallocAtomic((max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - len = 0; + if (!(ISA_DIGIT(cur))) + return(1); + if (!ISA_DIGIT(cur+1)) + cur++; + else if ((*cur != '0') && (ISA_DIGIT(cur + 1)) && (!ISA_DIGIT(cur+2))) + cur += 2; + else if ((*cur == '1') && (ISA_DIGIT(cur + 1)) && (ISA_DIGIT(cur + 2))) + cur += 3; + else if ((*cur == '2') && (*(cur + 1) >= '0') && + (*(cur + 1) <= '4') && (ISA_DIGIT(cur + 2))) + cur += 3; + else if ((*cur == '2') && (*(cur + 1) == '5') && + (*(cur + 2) >= '0') && (*(cur + 1) <= '5')) + cur += 3; + else + return(1); + *str = cur; + return(0); +} +/** + * xmlParse3986Host: + * @uri: pointer to an URI structure + * @str: the string to analyze + * + * Parse an host part and fills in the appropriate fields + * of the @uri structure + * + * host = IP-literal / IPv4address / reg-name + * IP-literal = "[" ( IPv6address / IPvFuture ) "]" + * IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet + * reg-name = *( unreserved / pct-encoded / sub-delims ) + * + * Returns 0 or the error code + */ +static int +xmlParse3986Host(xmlURIPtr uri, const char **str) +{ + const char *cur = *str; + const char *host; - if (uri->scheme != NULL) { - p = uri->scheme; - while (*p != 0) { - if (len >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = *p++; - } - if (len >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = ':'; - } - if (uri->opaque != NULL) { - p = uri->opaque; - while (*p != 0) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - if (IS_RESERVED(*(p)) || IS_UNRESERVED(*(p))) - ret[len++] = *p++; - else { - int val = *(unsigned char *)p++; - int hi = val / 0x10, lo = val % 0x10; - ret[len++] = '%'; - ret[len++] = hi + (hi > 9? 'A'-10 : '0'); - ret[len++] = lo + (lo > 9? 'A'-10 : '0'); - } - } - } else { - if (uri->server != NULL) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = '/'; - ret[len++] = '/'; - if (uri->user != NULL) { - p = uri->user; - while (*p != 0) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - if ((IS_UNRESERVED(*(p))) || - ((*(p) == ';')) || ((*(p) == ':')) || - ((*(p) == '&')) || ((*(p) == '=')) || - ((*(p) == '+')) || ((*(p) == '$')) || - ((*(p) == ','))) - ret[len++] = *p++; - else { - int val = *(unsigned char *)p++; - int hi = val / 0x10, lo = val % 0x10; - ret[len++] = '%'; - ret[len++] = hi + (hi > 9? 'A'-10 : '0'); - ret[len++] = lo + (lo > 9? 'A'-10 : '0'); - } - } - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = '@'; - } - p = uri->server; - while (*p != 0) { - if (len >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = *p++; - } - if (uri->port > 0) { - if (len + 10 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - len += snprintf((char *) &ret[len], max - len, ":%d", uri->port); - } - } else if (uri->authority != NULL) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = '/'; - ret[len++] = '/'; - p = uri->authority; - while (*p != 0) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - if ((IS_UNRESERVED(*(p))) || - ((*(p) == '$')) || ((*(p) == ',')) || ((*(p) == ';')) || - ((*(p) == ':')) || ((*(p) == '@')) || ((*(p) == '&')) || - ((*(p) == '=')) || ((*(p) == '+'))) - ret[len++] = *p++; - else { - int val = *(unsigned char *)p++; - int hi = val / 0x10, lo = val % 0x10; - ret[len++] = '%'; - ret[len++] = hi + (hi > 9? 'A'-10 : '0'); - ret[len++] = lo + (lo > 9? 'A'-10 : '0'); - } - } - } else if (uri->scheme != NULL) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = '/'; - ret[len++] = '/'; - } - if (uri->path != NULL) { - p = uri->path; - /* - * the colon in file:///d: should not be escaped or - * Windows accesses fail later. - */ - if ((uri->scheme != NULL) && - (p[0] == '/') && - (((p[1] >= 'a') && (p[1] <= 'z')) || - ((p[1] >= 'A') && (p[1] <= 'Z'))) && - (p[2] == ':') && - (xmlStrEqual(uri->scheme, BAD_CAST "file"))) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = *p++; - ret[len++] = *p++; - ret[len++] = *p++; - } - while (*p != 0) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - if ((IS_UNRESERVED(*(p))) || ((*(p) == '/')) || - ((*(p) == ';')) || ((*(p) == '@')) || ((*(p) == '&')) || - ((*(p) == '=')) || ((*(p) == '+')) || ((*(p) == '$')) || - ((*(p) == ','))) - ret[len++] = *p++; - else { - int val = *(unsigned char *)p++; - int hi = val / 0x10, lo = val % 0x10; - ret[len++] = '%'; - ret[len++] = hi + (hi > 9? 'A'-10 : '0'); - ret[len++] = lo + (lo > 9? 'A'-10 : '0'); - } - } - } - if (uri->query_raw != NULL) { - if (len + 1 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = '?'; - p = uri->query_raw; - while (*p != 0) { - if (len + 1 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = *p++; - } - } else if (uri->query != NULL) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = '?'; - p = uri->query; - while (*p != 0) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - if ((IS_UNRESERVED(*(p))) || (IS_RESERVED(*(p)))) - ret[len++] = *p++; - else { - int val = *(unsigned char *)p++; - int hi = val / 0x10, lo = val % 0x10; - ret[len++] = '%'; - ret[len++] = hi + (hi > 9? 'A'-10 : '0'); - ret[len++] = lo + (lo > 9? 'A'-10 : '0'); - } - } - } + host = cur; + /* + * IPv6 and future adressing scheme are enclosed between brackets + */ + if (*cur == '[') { + cur++; + while ((*cur != ']') && (*cur != 0)) + cur++; + if (*cur != ']') + return(1); + cur++; + goto found; } - if (uri->fragment != NULL) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - ret[len++] = '#'; - p = uri->fragment; - while (*p != 0) { - if (len + 3 >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, - (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } - } - if ((IS_UNRESERVED(*(p))) || (IS_RESERVED(*(p)))) - ret[len++] = *p++; - else { - int val = *(unsigned char *)p++; - int hi = val / 0x10, lo = val % 0x10; - ret[len++] = '%'; - ret[len++] = hi + (hi > 9? 'A'-10 : '0'); - ret[len++] = lo + (lo > 9? 'A'-10 : '0'); - } - } + /* + * try to parse an IPv4 + */ + if (ISA_DIGIT(cur)) { + if (xmlParse3986DecOctet(&cur) != 0) + goto not_ipv4; + if (*cur != '.') + goto not_ipv4; + cur++; + if (xmlParse3986DecOctet(&cur) != 0) + goto not_ipv4; + if (*cur != '.') + goto not_ipv4; + if (xmlParse3986DecOctet(&cur) != 0) + goto not_ipv4; + if (*cur != '.') + goto not_ipv4; + if (xmlParse3986DecOctet(&cur) != 0) + goto not_ipv4; + goto found; +not_ipv4: + cur = *str; } - if (len >= max) { - max *= 2; - ret = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlSaveUri: out of memory\n"); - return(NULL); - } + /* + * then this should be a hostname which can be empty + */ + while (ISA_UNRESERVED(cur) || ISA_PCT_ENCODED(cur) || ISA_SUB_DELIM(cur)) + NEXT(cur); +found: + if (uri != NULL) { + if (uri->authority != NULL) xmlFree(uri->authority); + uri->authority = NULL; + if (uri->server != NULL) xmlFree(uri->server); + if (cur != host) { + if (uri->cleanup & 2) + uri->server = STRNDUP(host, cur - host); + else + uri->server = xmlURIUnescapeString(host, cur - host, NULL); + } else + uri->server = NULL; } - ret[len++] = 0; - return(ret); + *str = cur; + return(0); } /** - * xmlPrintURI: - * @stream: a FILE* for the output - * @uri: pointer to an xmlURI + * xmlParse3986Authority: + * @uri: pointer to an URI structure + * @str: the string to analyze * - * Prints the URI in the stream @stream. + * Parse an authority part and fills in the appropriate fields + * of the @uri structure + * + * authority = [ userinfo "@" ] host [ ":" port ] + * + * Returns 0 or the error code */ -void -xmlPrintURI(FILE *stream, xmlURIPtr uri) { - xmlChar *out; +static int +xmlParse3986Authority(xmlURIPtr uri, const char **str) +{ + const char *cur; + int ret; - out = xmlSaveUri(uri); - if (out != NULL) { - fprintf(stream, "%s", (char *) out); - xmlFree(out); + cur = *str; + /* + * try to parse an userinfo and check for the trailing @ + */ + ret = xmlParse3986Userinfo(uri, &cur); + if ((ret != 0) || (*cur != '@')) + cur = *str; + else + cur++; + ret = xmlParse3986Host(uri, &cur); + if (ret != 0) return(ret); + if (*cur == ':') { + cur++; + ret = xmlParse3986Port(uri, &cur); + if (ret != 0) return(ret); } + *str = cur; + return(0); } /** - * xmlCleanURI: - * @uri: pointer to an xmlURI + * xmlParse3986Segment: + * @str: the string to analyze + * @forbid: an optional forbidden character + * @empty: allow an empty segment * - * Make sure the xmlURI struct is free of content + * Parse a segment and fills in the appropriate fields + * of the @uri structure + * + * segment = *pchar + * segment-nz = 1*pchar + * segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" ) + * ; non-zero-length segment without any colon ":" + * + * Returns 0 or the error code */ -static void -xmlCleanURI(xmlURIPtr uri) { - if (uri == NULL) return; +static int +xmlParse3986Segment(const char **str, char forbid, int empty) +{ + const char *cur; - if (uri->scheme != NULL) xmlFree(uri->scheme); - uri->scheme = NULL; - if (uri->server != NULL) xmlFree(uri->server); - uri->server = NULL; - if (uri->user != NULL) xmlFree(uri->user); - uri->user = NULL; - if (uri->path != NULL) xmlFree(uri->path); - uri->path = NULL; - if (uri->fragment != NULL) xmlFree(uri->fragment); - uri->fragment = NULL; - if (uri->opaque != NULL) xmlFree(uri->opaque); - uri->opaque = NULL; - if (uri->authority != NULL) xmlFree(uri->authority); - uri->authority = NULL; - if (uri->query != NULL) xmlFree(uri->query); - uri->query = NULL; - if (uri->query_raw != NULL) xmlFree(uri->query_raw); - uri->query_raw = NULL; + cur = *str; + if (!ISA_PCHAR(cur)) { + if (empty) + return(0); + return(1); + } + while (ISA_PCHAR(cur) && (*cur != forbid)) + NEXT(cur); + *str = cur; + return (0); +} + +/** + * xmlParse3986PathAbEmpty: + * @uri: pointer to an URI structure + * @str: the string to analyze + * + * Parse an path absolute or empty and fills in the appropriate fields + * of the @uri structure + * + * path-abempty = *( "/" segment ) + * + * Returns 0 or the error code + */ +static int +xmlParse3986PathAbEmpty(xmlURIPtr uri, const char **str) +{ + const char *cur; + int ret; + + cur = *str; + + while (*cur == '/') { + cur++; + ret = xmlParse3986Segment(&cur, 0, 1); + if (ret != 0) return(ret); + } + if (uri != NULL) { + if (uri->path != NULL) xmlFree(uri->path); + if (uri->cleanup & 2) + uri->path = STRNDUP(*str, cur - *str); + else + uri->path = xmlURIUnescapeString(*str, cur - *str, NULL); + } + *str = cur; + return (0); +} + +/** + * xmlParse3986PathAbsolute: + * @uri: pointer to an URI structure + * @str: the string to analyze + * + * Parse an path absolute and fills in the appropriate fields + * of the @uri structure + * + * path-absolute = "/" [ segment-nz *( "/" segment ) ] + * + * Returns 0 or the error code + */ +static int +xmlParse3986PathAbsolute(xmlURIPtr uri, const char **str) +{ + const char *cur; + int ret; + + cur = *str; + + if (*cur != '/') + return(1); + cur++; + ret = xmlParse3986Segment(&cur, 0, 0); + if (ret == 0) { + while (*cur == '/') { + cur++; + ret = xmlParse3986Segment(&cur, 0, 1); + if (ret != 0) return(ret); + } + } + if (uri != NULL) { + if (uri->path != NULL) xmlFree(uri->path); + if (uri->cleanup & 2) + uri->path = STRNDUP(*str, cur - *str); + else + uri->path = xmlURIUnescapeString(*str, cur - *str, NULL); + } + *str = cur; + return (0); +} + +/** + * xmlParse3986PathRootless: + * @uri: pointer to an URI structure + * @str: the string to analyze + * + * Parse an path without root and fills in the appropriate fields + * of the @uri structure + * + * path-rootless = segment-nz *( "/" segment ) + * + * Returns 0 or the error code + */ +static int +xmlParse3986PathRootless(xmlURIPtr uri, const char **str) +{ + const char *cur; + int ret; + + cur = *str; + + ret = xmlParse3986Segment(&cur, 0, 0); + if (ret != 0) return(ret); + while (*cur == '/') { + cur++; + ret = xmlParse3986Segment(&cur, 0, 1); + if (ret != 0) return(ret); + } + if (uri != NULL) { + if (uri->path != NULL) xmlFree(uri->path); + if (uri->cleanup & 2) + uri->path = STRNDUP(*str, cur - *str); + else + uri->path = xmlURIUnescapeString(*str, cur - *str, NULL); + } + *str = cur; + return (0); } /** - * xmlFreeURI: - * @uri: pointer to an xmlURI + * xmlParse3986PathNoScheme: + * @uri: pointer to an URI structure + * @str: the string to analyze * - * Free up the xmlURI struct + * Parse an path which is not a scheme and fills in the appropriate fields + * of the @uri structure + * + * path-noscheme = segment-nz-nc *( "/" segment ) + * + * Returns 0 or the error code */ -void -xmlFreeURI(xmlURIPtr uri) { - if (uri == NULL) return; +static int +xmlParse3986PathNoScheme(xmlURIPtr uri, const char **str) +{ + const char *cur; + int ret; - if (uri->scheme != NULL) xmlFree(uri->scheme); - if (uri->server != NULL) xmlFree(uri->server); - if (uri->user != NULL) xmlFree(uri->user); - if (uri->path != NULL) xmlFree(uri->path); - if (uri->fragment != NULL) xmlFree(uri->fragment); - if (uri->opaque != NULL) xmlFree(uri->opaque); - if (uri->authority != NULL) xmlFree(uri->authority); - if (uri->query != NULL) xmlFree(uri->query); - if (uri->query_raw != NULL) xmlFree(uri->query_raw); - xmlFree(uri); -} + cur = *str; -/************************************************************************ - * * - * Helper functions * - * * - ************************************************************************/ + ret = xmlParse3986Segment(&cur, ':', 0); + if (ret != 0) return(ret); + while (*cur == '/') { + cur++; + ret = xmlParse3986Segment(&cur, 0, 1); + if (ret != 0) return(ret); + } + if (uri != NULL) { + if (uri->path != NULL) xmlFree(uri->path); + if (uri->cleanup & 2) + uri->path = STRNDUP(*str, cur - *str); + else + uri->path = xmlURIUnescapeString(*str, cur - *str, NULL); + } + *str = cur; + return (0); +} /** - * xmlNormalizeURIPath: - * @path: pointer to the path string + * xmlParse3986HierPart: + * @uri: pointer to an URI structure + * @str: the string to analyze * - * Applies the 5 normalization steps to a path string--that is, RFC 2396 - * Section 5.2, steps 6.c through 6.g. + * Parse an hierarchical part and fills in the appropriate fields + * of the @uri structure * - * Normalization occurs directly on the string, no new allocation is done + * hier-part = "//" authority path-abempty + * / path-absolute + * / path-rootless + * / path-empty * - * Returns 0 or an error code + * Returns 0 or the error code */ -int -xmlNormalizeURIPath(char *path) { - char *cur, *out; - - if (path == NULL) - return(-1); - - /* Skip all initial "/" chars. We want to get to the beginning of the - * first non-empty segment. - */ - cur = path; - while (cur[0] == '/') - ++cur; - if (cur[0] == '\0') - return(0); +static int +xmlParse3986HierPart(xmlURIPtr uri, const char **str) +{ + const char *cur; + int ret; - /* Keep everything we've seen so far. */ - out = cur; + cur = *str; - /* - * Analyze each segment in sequence for cases (c) and (d). - */ - while (cur[0] != '\0') { - /* - * c) All occurrences of "./", where "." is a complete path segment, - * are removed from the buffer string. - */ - if ((cur[0] == '.') && (cur[1] == '/')) { - cur += 2; - /* '//' normalization should be done at this point too */ - while (cur[0] == '/') - cur++; - continue; + if ((*cur == '/') && (*(cur + 1) == '/')) { + cur += 2; + ret = xmlParse3986Authority(uri, &cur); + if (ret != 0) return(ret); + ret = xmlParse3986PathAbEmpty(uri, &cur); + if (ret != 0) return(ret); + *str = cur; + return(0); + } else if (*cur == '/') { + ret = xmlParse3986PathAbsolute(uri, &cur); + if (ret != 0) return(ret); + } else if (ISA_PCHAR(cur)) { + ret = xmlParse3986PathRootless(uri, &cur); + if (ret != 0) return(ret); + } else { + /* path-empty is effectively empty */ + if (uri != NULL) { + if (uri->path != NULL) xmlFree(uri->path); + uri->path = NULL; } + } + *str = cur; + return (0); +} - /* - * d) If the buffer string ends with "." as a complete path segment, - * that "." is removed. - */ - if ((cur[0] == '.') && (cur[1] == '\0')) - break; +/** + * xmlParse3986RelativeRef: + * @uri: pointer to an URI structure + * @str: the string to analyze + * + * Parse an URI string and fills in the appropriate fields + * of the @uri structure + * + * relative-ref = relative-part [ "?" query ] [ "#" fragment ] + * relative-part = "//" authority path-abempty + * / path-absolute + * / path-noscheme + * / path-empty + * + * Returns 0 or the error code + */ +static int +xmlParse3986RelativeRef(xmlURIPtr uri, const char *str) { + int ret; - /* Otherwise keep the segment. */ - while (cur[0] != '/') { - if (cur[0] == '\0') - goto done_cd; - (out++)[0] = (cur++)[0]; + if ((*str == '/') && (*(str + 1) == '/')) { + str += 2; + ret = xmlParse3986Authority(uri, &str); + if (ret != 0) return(ret); + ret = xmlParse3986PathAbEmpty(uri, &str); + if (ret != 0) return(ret); + } else if (*str == '/') { + ret = xmlParse3986PathAbsolute(uri, &str); + if (ret != 0) return(ret); + } else if (ISA_PCHAR(str)) { + ret = xmlParse3986PathNoScheme(uri, &str); + if (ret != 0) return(ret); + } else { + /* path-empty is effectively empty */ + if (uri != NULL) { + if (uri->path != NULL) xmlFree(uri->path); + uri->path = NULL; } - /* nomalize // */ - while ((cur[0] == '/') && (cur[1] == '/')) - cur++; - - (out++)[0] = (cur++)[0]; } - done_cd: - out[0] = '\0'; - - /* Reset to the beginning of the first segment for the next sequence. */ - cur = path; - while (cur[0] == '/') - ++cur; - if (cur[0] == '\0') - return(0); - - /* - * Analyze each segment in sequence for cases (e) and (f). - * - * e) All occurrences of "/../", where is a - * complete path segment not equal to "..", are removed from the - * buffer string. Removal of these path segments is performed - * iteratively, removing the leftmost matching pattern on each - * iteration, until no matching pattern remains. - * - * f) If the buffer string ends with "/..", where - * is a complete path segment not equal to "..", that - * "/.." is removed. - * - * To satisfy the "iterative" clause in (e), we need to collapse the - * string every time we find something that needs to be removed. Thus, - * we don't need to keep two pointers into the string: we only need a - * "current position" pointer. - */ - while (1) { - char *segp, *tmp; - - /* At the beginning of each iteration of this loop, "cur" points to - * the first character of the segment we want to examine. - */ - - /* Find the end of the current segment. */ - segp = cur; - while ((segp[0] != '/') && (segp[0] != '\0')) - ++segp; - - /* If this is the last segment, we're done (we need at least two - * segments to meet the criteria for the (e) and (f) cases). - */ - if (segp[0] == '\0') - break; - - /* If the first segment is "..", or if the next segment _isn't_ "..", - * keep this segment and try the next one. - */ - ++segp; - if (((cur[0] == '.') && (cur[1] == '.') && (segp == cur+3)) - || ((segp[0] != '.') || (segp[1] != '.') - || ((segp[2] != '/') && (segp[2] != '\0')))) { - cur = segp; - continue; - } - - /* If we get here, remove this segment and the next one and back up - * to the previous segment (if there is one), to implement the - * "iteratively" clause. It's pretty much impossible to back up - * while maintaining two pointers into the buffer, so just compact - * the whole buffer now. - */ - - /* If this is the end of the buffer, we're done. */ - if (segp[2] == '\0') { - cur[0] = '\0'; - break; - } - /* Valgrind complained, strcpy(cur, segp + 3); */ - /* string will overlap, do not use strcpy */ - tmp = cur; - segp += 3; - while ((*tmp++ = *segp++) != 0); - - /* If there are no previous segments, then keep going from here. */ - segp = cur; - while ((segp > path) && ((--segp)[0] == '/')) - ; - if (segp == path) - continue; - /* "segp" is pointing to the end of a previous segment; find it's - * start. We need to back up to the previous segment and start - * over with that to handle things like "foo/bar/../..". If we - * don't do this, then on the first pass we'll remove the "bar/..", - * but be pointing at the second ".." so we won't realize we can also - * remove the "foo/..". - */ - cur = segp; - while ((cur > path) && (cur[-1] != '/')) - --cur; + if (*str == '?') { + str++; + ret = xmlParse3986Query(uri, &str); + if (ret != 0) return(ret); + } + if (*str == '#') { + str++; + ret = xmlParse3986Fragment(uri, &str); + if (ret != 0) return(ret); + } + if (*str != 0) { + xmlCleanURI(uri); + return(1); } - out[0] = '\0'; + return(0); +} - /* - * g) If the resulting buffer string still begins with one or more - * complete path segments of "..", then the reference is - * considered to be in error. Implementations may handle this - * error by retaining these components in the resolved path (i.e., - * treating them as part of the final URI), by removing them from - * the resolved path (i.e., discarding relative levels above the - * root), or by avoiding traversal of the reference. - * - * We discard them from the final path. - */ - if (path[0] == '/') { - cur = path; - while ((cur[0] == '/') && (cur[1] == '.') && (cur[2] == '.') - && ((cur[3] == '/') || (cur[3] == '\0'))) - cur += 3; - if (cur != path) { - out = path; - while (cur[0] != '\0') - (out++)[0] = (cur++)[0]; - out[0] = 0; - } - } +/** + * xmlParse3986URI: + * @uri: pointer to an URI structure + * @str: the string to analyze + * + * Parse an URI string and fills in the appropriate fields + * of the @uri structure + * + * scheme ":" hier-part [ "?" query ] [ "#" fragment ] + * + * Returns 0 or the error code + */ +static int +xmlParse3986URI(xmlURIPtr uri, const char *str) { + int ret; + ret = xmlParse3986Scheme(uri, &str); + if (ret != 0) return(ret); + if (*str != ':') { + return(1); + } + str++; + ret = xmlParse3986HierPart(uri, &str); + if (ret != 0) return(ret); + if (*str == '?') { + str++; + ret = xmlParse3986Query(uri, &str); + if (ret != 0) return(ret); + } + if (*str == '#') { + str++; + ret = xmlParse3986Fragment(uri, &str); + if (ret != 0) return(ret); + } + if (*str != 0) { + xmlCleanURI(uri); + return(1); + } return(0); } -static int is_hex(char c) { - if (((c >= '0') && (c <= '9')) || - ((c >= 'a') && (c <= 'f')) || - ((c >= 'A') && (c <= 'F'))) - return(1); +/** + * xmlParse3986URIReference: + * @uri: pointer to an URI structure + * @str: the string to analyze + * + * Parse an URI reference string and fills in the appropriate fields + * of the @uri structure + * + * URI-reference = URI / relative-ref + * + * Returns 0 or the error code + */ +static int +xmlParse3986URIReference(xmlURIPtr uri, const char *str) { + int ret; + + if (str == NULL) + return(-1); + xmlCleanURI(uri); + + /* + * Try first to parse absolute refs, then fallback to relative if + * it fails. + */ + ret = xmlParse3986URI(uri, str); + if (ret != 0) { + xmlCleanURI(uri); + ret = xmlParse3986RelativeRef(uri, str); + if (ret != 0) { + xmlCleanURI(uri); + return(ret); + } + } return(0); } /** - * xmlURIUnescapeString: - * @str: the string to unescape - * @len: the length in bytes to unescape (or <= 0 to indicate full string) - * @target: optional destination buffer + * xmlParseURI: + * @str: the URI string to analyze * - * Unescaping routine, but does not check that the string is an URI. The - * output is a direct unsigned char translation of %XX values (no encoding) - * Note that the length of the result can only be smaller or same size as - * the input string. + * Parse an URI based on RFC 3986 * - * Returns a copy of the string, but unescaped, will return NULL only in case - * of error + * URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ] + * + * Returns a newly built xmlURIPtr or NULL in case of error */ -char * -xmlURIUnescapeString(const char *str, int len, char *target) { - char *ret, *out; - const char *in; +xmlURIPtr +xmlParseURI(const char *str) { + xmlURIPtr uri; + int ret; if (str == NULL) return(NULL); - if (len <= 0) len = strlen(str); - if (len < 0) return(NULL); - - if (target == NULL) { - ret = (char *) xmlMallocAtomic(len + 1); - if (ret == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlURIUnescapeString: out of memory\n"); + uri = xmlCreateURI(); + if (uri != NULL) { + ret = xmlParse3986URIReference(uri, str); + if (ret) { + xmlFreeURI(uri); return(NULL); } - } else - ret = target; - in = str; - out = ret; - while(len > 0) { - if ((len > 2) && (*in == '%') && (is_hex(in[1])) && (is_hex(in[2]))) { - in++; - if ((*in >= '0') && (*in <= '9')) - *out = (*in - '0'); - else if ((*in >= 'a') && (*in <= 'f')) - *out = (*in - 'a') + 10; - else if ((*in >= 'A') && (*in <= 'F')) - *out = (*in - 'A') + 10; - in++; - if ((*in >= '0') && (*in <= '9')) - *out = *out * 16 + (*in - '0'); - else if ((*in >= 'a') && (*in <= 'f')) - *out = *out * 16 + (*in - 'a') + 10; - else if ((*in >= 'A') && (*in <= 'F')) - *out = *out * 16 + (*in - 'A') + 10; - in++; - len -= 3; - out++; - } else { - *out++ = *in++; - len--; + } + return(uri); +} + +/** + * xmlParseURIReference: + * @uri: pointer to an URI structure + * @str: the string to analyze + * + * Parse an URI reference string based on RFC 3986 and fills in the + * appropriate fields of the @uri structure + * + * URI-reference = URI / relative-ref + * + * Returns 0 or the error code + */ +int +xmlParseURIReference(xmlURIPtr uri, const char *str) { + return(xmlParse3986URIReference(uri, str)); +} + +/** + * xmlParseURIRaw: + * @str: the URI string to analyze + * @raw: if 1 unescaping of URI pieces are disabled + * + * Parse an URI but allows to keep intact the original fragments. + * + * URI-reference = URI / relative-ref + * + * Returns a newly built xmlURIPtr or NULL in case of error + */ +xmlURIPtr +xmlParseURIRaw(const char *str, int raw) { + xmlURIPtr uri; + int ret; + + if (str == NULL) + return(NULL); + uri = xmlCreateURI(); + if (uri != NULL) { + if (raw) { + uri->cleanup |= 2; + } + ret = xmlParseURIReference(uri, str); + if (ret) { + xmlFreeURI(uri); + return(NULL); } } - *out = 0; + return(uri); +} + +/************************************************************************ + * * + * Generic URI structure functions * + * * + ************************************************************************/ + +/** + * xmlCreateURI: + * + * Simply creates an empty xmlURI + * + * Returns the new structure or NULL in case of error + */ +xmlURIPtr +xmlCreateURI(void) { + xmlURIPtr ret; + + ret = (xmlURIPtr) xmlMalloc(sizeof(xmlURI)); + if (ret == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlCreateURI: out of memory\n"); + return(NULL); + } + memset(ret, 0, sizeof(xmlURI)); return(ret); } /** - * xmlURIEscapeStr: - * @str: string to escape - * @list: exception list string of chars not to escape + * xmlSaveUri: + * @uri: pointer to an xmlURI * - * This routine escapes a string to hex, ignoring reserved characters (a-z) - * and the characters in the exception list. + * Save the URI as an escaped string * - * Returns a new escaped string or NULL in case of error. + * Returns a new string (to be deallocated by caller) */ xmlChar * -xmlURIEscapeStr(const xmlChar *str, const xmlChar *list) { - xmlChar *ret, ch; - const xmlChar *in; +xmlSaveUri(xmlURIPtr uri) { + xmlChar *ret = NULL; + xmlChar *temp; + const char *p; + int len; + int max; - unsigned int len, out; + if (uri == NULL) return(NULL); - if (str == NULL) - return(NULL); - if (str[0] == 0) - return(xmlStrdup(str)); - len = xmlStrlen(str); - if (!(len > 0)) return(NULL); - len += 20; - ret = (xmlChar *) xmlMallocAtomic(len); + max = 80; + ret = (xmlChar *) xmlMallocAtomic((max + 1) * sizeof(xmlChar)); if (ret == NULL) { xmlGenericError(xmlGenericErrorContext, - "xmlURIEscapeStr: out of memory\n"); + "xmlSaveUri: out of memory\n"); return(NULL); } - in = (const xmlChar *) str; - out = 0; - while(*in != 0) { - if (len - out <= 3) { - len += 20; - ret = (xmlChar *) xmlRealloc(ret, len); - if (ret == NULL) { + len = 0; + + if (uri->scheme != NULL) { + p = uri->scheme; + while (*p != 0) { + if (len >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = *p++; + } + if (len >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { xmlGenericError(xmlGenericErrorContext, - "xmlURIEscapeStr: out of memory\n"); + "xmlSaveUri: out of memory\n"); + xmlFree(ret); return(NULL); } + ret = temp; } - - ch = *in; - - if ((ch != '@') && (!IS_UNRESERVED(ch)) && (!xmlStrchr(list, ch))) { - unsigned char val; - ret[out++] = '%'; - val = ch >> 4; - if (val <= 9) - ret[out++] = '0' + val; - else - ret[out++] = 'A' + val - 0xA; - val = ch & 0xF; - if (val <= 9) - ret[out++] = '0' + val; - else - ret[out++] = 'A' + val - 0xA; - in++; - } else { - ret[out++] = *in++; + ret[len++] = ':'; + } + if (uri->opaque != NULL) { + p = uri->opaque; + while (*p != 0) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + if (IS_RESERVED(*(p)) || IS_UNRESERVED(*(p))) + ret[len++] = *p++; + else { + int val = *(unsigned char *)p++; + int hi = val / 0x10, lo = val % 0x10; + ret[len++] = '%'; + ret[len++] = hi + (hi > 9? 'A'-10 : '0'); + ret[len++] = lo + (lo > 9? 'A'-10 : '0'); + } + } + } else { + if (uri->server != NULL) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = '/'; + ret[len++] = '/'; + if (uri->user != NULL) { + p = uri->user; + while (*p != 0) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + if ((IS_UNRESERVED(*(p))) || + ((*(p) == ';')) || ((*(p) == ':')) || + ((*(p) == '&')) || ((*(p) == '=')) || + ((*(p) == '+')) || ((*(p) == '$')) || + ((*(p) == ','))) + ret[len++] = *p++; + else { + int val = *(unsigned char *)p++; + int hi = val / 0x10, lo = val % 0x10; + ret[len++] = '%'; + ret[len++] = hi + (hi > 9? 'A'-10 : '0'); + ret[len++] = lo + (lo > 9? 'A'-10 : '0'); + } + } + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = '@'; + } + p = uri->server; + while (*p != 0) { + if (len >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = *p++; + } + if (uri->port > 0) { + if (len + 10 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + len += snprintf((char *) &ret[len], max - len, ":%d", uri->port); + } + } else if (uri->authority != NULL) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = '/'; + ret[len++] = '/'; + p = uri->authority; + while (*p != 0) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + if ((IS_UNRESERVED(*(p))) || + ((*(p) == '$')) || ((*(p) == ',')) || ((*(p) == ';')) || + ((*(p) == ':')) || ((*(p) == '@')) || ((*(p) == '&')) || + ((*(p) == '=')) || ((*(p) == '+'))) + ret[len++] = *p++; + else { + int val = *(unsigned char *)p++; + int hi = val / 0x10, lo = val % 0x10; + ret[len++] = '%'; + ret[len++] = hi + (hi > 9? 'A'-10 : '0'); + ret[len++] = lo + (lo > 9? 'A'-10 : '0'); + } + } + } else if (uri->scheme != NULL) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = '/'; + ret[len++] = '/'; + } + if (uri->path != NULL) { + p = uri->path; + /* + * the colon in file:///d: should not be escaped or + * Windows accesses fail later. + */ + if ((uri->scheme != NULL) && + (p[0] == '/') && + (((p[1] >= 'a') && (p[1] <= 'z')) || + ((p[1] >= 'A') && (p[1] <= 'Z'))) && + (p[2] == ':') && + (xmlStrEqual(BAD_CAST uri->scheme, BAD_CAST "file"))) { + if (len + 3 >= max) { + max *= 2; + ret = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (ret == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + return(NULL); + } + } + ret[len++] = *p++; + ret[len++] = *p++; + ret[len++] = *p++; + } + while (*p != 0) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + if ((IS_UNRESERVED(*(p))) || ((*(p) == '/')) || + ((*(p) == ';')) || ((*(p) == '@')) || ((*(p) == '&')) || + ((*(p) == '=')) || ((*(p) == '+')) || ((*(p) == '$')) || + ((*(p) == ','))) + ret[len++] = *p++; + else { + int val = *(unsigned char *)p++; + int hi = val / 0x10, lo = val % 0x10; + ret[len++] = '%'; + ret[len++] = hi + (hi > 9? 'A'-10 : '0'); + ret[len++] = lo + (lo > 9? 'A'-10 : '0'); + } + } + } + if (uri->query_raw != NULL) { + if (len + 1 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = '?'; + p = uri->query_raw; + while (*p != 0) { + if (len + 1 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = *p++; + } + } else if (uri->query != NULL) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = '?'; + p = uri->query; + while (*p != 0) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + if ((IS_UNRESERVED(*(p))) || (IS_RESERVED(*(p)))) + ret[len++] = *p++; + else { + int val = *(unsigned char *)p++; + int hi = val / 0x10, lo = val % 0x10; + ret[len++] = '%'; + ret[len++] = hi + (hi > 9? 'A'-10 : '0'); + ret[len++] = lo + (lo > 9? 'A'-10 : '0'); + } + } } - - } - ret[out] = 0; - return(ret); -} - -/** - * xmlURIEscape: - * @str: the string of the URI to escape - * - * Escaping routine, does not do validity checks ! - * It will try to escape the chars needing this, but this is heuristic - * based it's impossible to be sure. - * - * Returns an copy of the string, but escaped - * - * 25 May 2001 - * Uses xmlParseURI and xmlURIEscapeStr to try to escape correctly - * according to RFC2396. - * - Carl Douglas - */ -xmlChar * -xmlURIEscape(const xmlChar * str) -{ - xmlChar *ret, *segment = NULL; - xmlURIPtr uri; - int ret2; - -#define NULLCHK(p) if(!p) { \ - xmlGenericError(xmlGenericErrorContext, \ - "xmlURIEscape: out of memory\n"); \ - return NULL; } - - if (str == NULL) - return (NULL); - - uri = xmlCreateURI(); - if (uri != NULL) { - /* - * Allow escaping errors in the unescaped form - */ - uri->cleanup = 1; - ret2 = xmlParseURIReference(uri, (const char *)str); - if (ret2) { - xmlFreeURI(uri); - return (NULL); - } - } - - if (!uri) - return NULL; - - ret = NULL; - - if (uri->scheme) { - segment = xmlURIEscapeStr(BAD_CAST uri->scheme, BAD_CAST "+-."); - NULLCHK(segment) - ret = xmlStrcat(ret, segment); - ret = xmlStrcat(ret, BAD_CAST ":"); - xmlFree(segment); - } - - if (uri->authority) { - segment = - xmlURIEscapeStr(BAD_CAST uri->authority, BAD_CAST "/?;:@"); - NULLCHK(segment) - ret = xmlStrcat(ret, BAD_CAST "//"); - ret = xmlStrcat(ret, segment); - xmlFree(segment); - } - - if (uri->user) { - segment = xmlURIEscapeStr(BAD_CAST uri->user, BAD_CAST ";:&=+$,"); - NULLCHK(segment) - ret = xmlStrcat(ret,BAD_CAST "//"); - ret = xmlStrcat(ret, segment); - ret = xmlStrcat(ret, BAD_CAST "@"); - xmlFree(segment); - } - - if (uri->server) { - segment = xmlURIEscapeStr(BAD_CAST uri->server, BAD_CAST "/?;:@"); - NULLCHK(segment) - if (uri->user == NULL) - ret = xmlStrcat(ret, BAD_CAST "//"); - ret = xmlStrcat(ret, segment); - xmlFree(segment); - } - - if (uri->port) { - xmlChar port[10]; - - snprintf((char *) port, 10, "%d", uri->port); - ret = xmlStrcat(ret, BAD_CAST ":"); - ret = xmlStrcat(ret, port); - } - - if (uri->path) { - segment = - xmlURIEscapeStr(BAD_CAST uri->path, BAD_CAST ":@&=+$,/?;"); - NULLCHK(segment) - ret = xmlStrcat(ret, segment); - xmlFree(segment); - } - - if (uri->query_raw) { - ret = xmlStrcat(ret, BAD_CAST "?"); - ret = xmlStrcat(ret, BAD_CAST uri->query_raw); - } - else if (uri->query) { - segment = - xmlURIEscapeStr(BAD_CAST uri->query, BAD_CAST ";/?:@&=+,$"); - NULLCHK(segment) - ret = xmlStrcat(ret, BAD_CAST "?"); - ret = xmlStrcat(ret, segment); - xmlFree(segment); } - - if (uri->opaque) { - segment = xmlURIEscapeStr(BAD_CAST uri->opaque, BAD_CAST ""); - NULLCHK(segment) - ret = xmlStrcat(ret, segment); - xmlFree(segment); - } - - if (uri->fragment) { - segment = xmlURIEscapeStr(BAD_CAST uri->fragment, BAD_CAST "#"); - NULLCHK(segment) - ret = xmlStrcat(ret, BAD_CAST "#"); - ret = xmlStrcat(ret, segment); - xmlFree(segment); - } - - xmlFreeURI(uri); -#undef NULLCHK - - return (ret); -} - -/************************************************************************ - * * - * Escaped URI parsing * - * * - ************************************************************************/ - -/** - * xmlParseURIFragment: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze - * - * Parse an URI fragment string and fills in the appropriate fields - * of the @uri structure. - * - * fragment = *uric - * - * Returns 0 or the error code - */ -static int -xmlParseURIFragment(xmlURIPtr uri, const char **str) -{ - const char *cur; - - if (str == NULL) - return (-1); - - cur = *str; - - while (IS_URIC(cur) || IS_UNWISE(cur)) - NEXT(cur); - if (uri != NULL) { - if (uri->fragment != NULL) - xmlFree(uri->fragment); - if (uri->cleanup & 2) - uri->fragment = STRNDUP(*str, cur - *str); - else - uri->fragment = xmlURIUnescapeString(*str, cur - *str, NULL); - } - *str = cur; - return (0); -} - -/** - * xmlParseURIQuery: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze - * - * Parse the query part of an URI - * - * query = *uric - * - * Returns 0 or the error code - */ -static int -xmlParseURIQuery(xmlURIPtr uri, const char **str) -{ - const char *cur; - - if (str == NULL) - return (-1); - - cur = *str; - - while ((IS_URIC(cur)) || - ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) - NEXT(cur); - if (uri != NULL) { - if (uri->query != NULL) - xmlFree(uri->query); - if (uri->cleanup & 2) - uri->query = STRNDUP(*str, cur - *str); - else - uri->query = xmlURIUnescapeString(*str, cur - *str, NULL); - - /* Save the raw bytes of the query as well. - * See: http://mail.gnome.org/archives/xml/2007-April/thread.html#00114 - */ - if (uri->query_raw != NULL) - xmlFree (uri->query_raw); - uri->query_raw = STRNDUP (*str, cur - *str); + if (uri->fragment != NULL) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = '#'; + p = uri->fragment; + while (*p != 0) { + if (len + 3 >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, + (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + if ((IS_UNRESERVED(*(p))) || (IS_RESERVED(*(p)))) + ret[len++] = *p++; + else { + int val = *(unsigned char *)p++; + int hi = val / 0x10, lo = val % 0x10; + ret[len++] = '%'; + ret[len++] = hi + (hi > 9? 'A'-10 : '0'); + ret[len++] = lo + (lo > 9? 'A'-10 : '0'); + } + } } - *str = cur; - return (0); + if (len >= max) { + max *= 2; + temp = (xmlChar *) xmlRealloc(ret, (max + 1) * sizeof(xmlChar)); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlSaveUri: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + ret[len++] = 0; + return(ret); } /** - * xmlParseURIScheme: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze - * - * Parse an URI scheme - * - * scheme = alpha *( alpha | digit | "+" | "-" | "." ) + * xmlPrintURI: + * @stream: a FILE* for the output + * @uri: pointer to an xmlURI * - * Returns 0 or the error code + * Prints the URI in the stream @stream. */ -static int -xmlParseURIScheme(xmlURIPtr uri, const char **str) { - const char *cur; +void +xmlPrintURI(FILE *stream, xmlURIPtr uri) { + xmlChar *out; - if (str == NULL) - return(-1); - - cur = *str; - if (!IS_ALPHA(*cur)) - return(2); - cur++; - while (IS_SCHEME(*cur)) cur++; - if (uri != NULL) { - if (uri->scheme != NULL) xmlFree(uri->scheme); - uri->scheme = STRNDUP(*str, cur - *str); + out = xmlSaveUri(uri); + if (out != NULL) { + fprintf(stream, "%s", (char *) out); + xmlFree(out); } - *str = cur; - return(0); } /** - * xmlParseURIOpaquePart: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze - * - * Parse an URI opaque part - * - * opaque_part = uric_no_slash *uric + * xmlCleanURI: + * @uri: pointer to an xmlURI * - * Returns 0 or the error code + * Make sure the xmlURI struct is free of content */ -static int -xmlParseURIOpaquePart(xmlURIPtr uri, const char **str) -{ - const char *cur; +static void +xmlCleanURI(xmlURIPtr uri) { + if (uri == NULL) return; - if (str == NULL) - return (-1); + if (uri->scheme != NULL) xmlFree(uri->scheme); + uri->scheme = NULL; + if (uri->server != NULL) xmlFree(uri->server); + uri->server = NULL; + if (uri->user != NULL) xmlFree(uri->user); + uri->user = NULL; + if (uri->path != NULL) xmlFree(uri->path); + uri->path = NULL; + if (uri->fragment != NULL) xmlFree(uri->fragment); + uri->fragment = NULL; + if (uri->opaque != NULL) xmlFree(uri->opaque); + uri->opaque = NULL; + if (uri->authority != NULL) xmlFree(uri->authority); + uri->authority = NULL; + if (uri->query != NULL) xmlFree(uri->query); + uri->query = NULL; + if (uri->query_raw != NULL) xmlFree(uri->query_raw); + uri->query_raw = NULL; +} - cur = *str; - if (!((IS_URIC_NO_SLASH(cur)) || - ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur))))) { - return (3); - } - NEXT(cur); - while ((IS_URIC(cur)) || - ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) - NEXT(cur); - if (uri != NULL) { - if (uri->opaque != NULL) - xmlFree(uri->opaque); - if (uri->cleanup & 2) - uri->opaque = STRNDUP(*str, cur - *str); - else - uri->opaque = xmlURIUnescapeString(*str, cur - *str, NULL); - } - *str = cur; - return (0); +/** + * xmlFreeURI: + * @uri: pointer to an xmlURI + * + * Free up the xmlURI struct + */ +void +xmlFreeURI(xmlURIPtr uri) { + if (uri == NULL) return; + + if (uri->scheme != NULL) xmlFree(uri->scheme); + if (uri->server != NULL) xmlFree(uri->server); + if (uri->user != NULL) xmlFree(uri->user); + if (uri->path != NULL) xmlFree(uri->path); + if (uri->fragment != NULL) xmlFree(uri->fragment); + if (uri->opaque != NULL) xmlFree(uri->opaque); + if (uri->authority != NULL) xmlFree(uri->authority); + if (uri->query != NULL) xmlFree(uri->query); + if (uri->query_raw != NULL) xmlFree(uri->query_raw); + xmlFree(uri); } +/************************************************************************ + * * + * Helper functions * + * * + ************************************************************************/ + /** - * xmlParseURIServer: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze + * xmlNormalizeURIPath: + * @path: pointer to the path string + * + * Applies the 5 normalization steps to a path string--that is, RFC 2396 + * Section 5.2, steps 6.c through 6.g. * - * Parse a server subpart of an URI, it's a finer grain analysis - * of the authority part. - * - * server = [ [ userinfo "@" ] hostport ] - * userinfo = *( unreserved | escaped | - * ";" | ":" | "&" | "=" | "+" | "$" | "," ) - * hostport = host [ ":" port ] - * host = hostname | IPv4address | IPv6reference - * hostname = *( domainlabel "." ) toplabel [ "." ] - * domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum - * toplabel = alpha | alpha *( alphanum | "-" ) alphanum - * IPv6reference = "[" IPv6address "]" - * IPv6address = hexpart [ ":" IPv4address ] - * IPv4address = 1*3digit "." 1*3digit "." 1*3digit "." 1*3digit - * hexpart = hexseq | hexseq "::" [ hexseq ]| "::" [ hexseq ] - * hexseq = hex4 *( ":" hex4) - * hex4 = 1*4hexdig - * port = *digit + * Normalization occurs directly on the string, no new allocation is done * - * Returns 0 or the error code + * Returns 0 or an error code */ -static int -xmlParseURIServer(xmlURIPtr uri, const char **str) { - const char *cur; - const char *host, *tmp; - const int IPV4max = 4; - const int IPV6max = 8; - int oct; +int +xmlNormalizeURIPath(char *path) { + char *cur, *out; - if (str == NULL) + if (path == NULL) return(-1); - - cur = *str; - /* - * is there a userinfo ? - */ - while (IS_USERINFO(cur)) NEXT(cur); - if (*cur == '@') { - if (uri != NULL) { - if (uri->user != NULL) xmlFree(uri->user); - if (uri->cleanup & 2) - uri->user = STRNDUP(*str, cur - *str); - else - uri->user = xmlURIUnescapeString(*str, cur - *str, NULL); - } - cur++; - } else { - if (uri != NULL) { - if (uri->user != NULL) xmlFree(uri->user); - uri->user = NULL; - } - cur = *str; - } - /* - * This can be empty in the case where there is no server + /* Skip all initial "/" chars. We want to get to the beginning of the + * first non-empty segment. */ - host = cur; - if (*cur == '/') { - if (uri != NULL) { - if (uri->authority != NULL) xmlFree(uri->authority); - uri->authority = NULL; - if (uri->server != NULL) xmlFree(uri->server); - uri->server = NULL; - uri->port = 0; - } - return(0); - } + cur = path; + while (cur[0] == '/') + ++cur; + if (cur[0] == '\0') + return(0); + + /* Keep everything we've seen so far. */ + out = cur; + /* - * host part of hostport can denote an IPV4 address, an IPV6 address - * or an unresolved name. Check the IP first, its easier to detect - * errors if wrong one. - * An IPV6 address must start with a '[' and end with a ']'. + * Analyze each segment in sequence for cases (c) and (d). */ - if (*cur == '[') { - int compress=0; - cur++; - for (oct = 0; oct < IPV6max; ++oct) { - if (*cur == ':') { - if (compress) - return(3); /* multiple compression attempted */ - if (!oct) { /* initial char is compression */ - if (*++cur != ':') - return(3); - } - compress = 1; /* set compression-encountered flag */ - cur++; /* skip over the second ':' */ - continue; - } - while(IS_HEX(*cur)) cur++; - if (oct == (IPV6max-1)) - continue; - if (*cur != ':') - break; - cur++; - } - if ((!compress) && (oct != IPV6max)) - return(3); - if (*cur != ']') - return(3); - if (uri != NULL) { - if (uri->server != NULL) xmlFree(uri->server); - uri->server = (char *)xmlStrndup((xmlChar *)host+1, - (cur-host)-1); - } - cur++; - } else { + while (cur[0] != '\0') { /* - * Not IPV6, maybe IPV4 + * c) All occurrences of "./", where "." is a complete path segment, + * are removed from the buffer string. */ - for (oct = 0; oct < IPV4max; ++oct) { - if (*cur == '.') - return(3); /* e.g. http://.xml/ or http://18.29..30/ */ - while(IS_DIGIT(*cur)) cur++; - if (oct == (IPV4max-1)) - continue; - if (*cur != '.') - break; - cur++; - } - } - if ((host[0] != '[') && (oct < IPV4max || (*cur == '.' && cur++) || - IS_ALPHA(*cur))) { - /* maybe host_name */ - if (!IS_ALPHANUM(*cur)) - return(4); /* e.g. http://xml.$oft */ - do { - do ++cur; while (IS_ALPHANUM(*cur)); - if (*cur == '-') { - --cur; - if (*cur == '.') - return(5); /* e.g. http://xml.-soft */ - ++cur; - continue; - } - if (*cur == '.') { - --cur; - if (*cur == '-') - return(6); /* e.g. http://xml-.soft */ - if (*cur == '.') - return(7); /* e.g. http://xml..soft */ - ++cur; - continue; - } - break; - } while (1); - tmp = cur; - if (tmp[-1] == '.') - --tmp; /* e.g. http://xml.$Oft/ */ - do --tmp; while (tmp >= host && IS_ALPHANUM(*tmp)); - if ((++tmp == host || tmp[-1] == '.') && !IS_ALPHA(*tmp)) - return(8); /* e.g. http://xmlsOft.0rg/ */ - } - if (uri != NULL) { - if (uri->authority != NULL) xmlFree(uri->authority); - uri->authority = NULL; - if (host[0] != '[') { /* it's not an IPV6 addr */ - if (uri->server != NULL) xmlFree(uri->server); - if (uri->cleanup & 2) - uri->server = STRNDUP(host, cur - host); - else - uri->server = xmlURIUnescapeString(host, cur - host, NULL); - } - } - /* - * finish by checking for a port presence. - */ - if (*cur == ':') { - cur++; - if (IS_DIGIT(*cur)) { - if (uri != NULL) - uri->port = 0; - while (IS_DIGIT(*cur)) { - if (uri != NULL) - uri->port = uri->port * 10 + (*cur - '0'); + if ((cur[0] == '.') && (cur[1] == '/')) { + cur += 2; + /* '//' normalization should be done at this point too */ + while (cur[0] == '/') cur++; - } + continue; } - } - *str = cur; - return(0); -} -/** - * xmlParseURIRelSegment: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze - * - * Parse an URI relative segment - * - * rel_segment = 1*( unreserved | escaped | ";" | "@" | "&" | "=" | - * "+" | "$" | "," ) - * - * Returns 0 or the error code - */ -static int -xmlParseURIRelSegment(xmlURIPtr uri, const char **str) -{ - const char *cur; + /* + * d) If the buffer string ends with "." as a complete path segment, + * that "." is removed. + */ + if ((cur[0] == '.') && (cur[1] == '\0')) + break; - if (str == NULL) - return (-1); + /* Otherwise keep the segment. */ + while (cur[0] != '/') { + if (cur[0] == '\0') + goto done_cd; + (out++)[0] = (cur++)[0]; + } + /* nomalize // */ + while ((cur[0] == '/') && (cur[1] == '/')) + cur++; - cur = *str; - if (!((IS_SEGMENT(cur)) || - ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur))))) { - return (3); - } - NEXT(cur); - while ((IS_SEGMENT(cur)) || - ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) - NEXT(cur); - if (uri != NULL) { - if (uri->path != NULL) - xmlFree(uri->path); - if (uri->cleanup & 2) - uri->path = STRNDUP(*str, cur - *str); - else - uri->path = xmlURIUnescapeString(*str, cur - *str, NULL); + (out++)[0] = (cur++)[0]; } - *str = cur; - return (0); -} + done_cd: + out[0] = '\0'; + + /* Reset to the beginning of the first segment for the next sequence. */ + cur = path; + while (cur[0] == '/') + ++cur; + if (cur[0] == '\0') + return(0); + + /* + * Analyze each segment in sequence for cases (e) and (f). + * + * e) All occurrences of "/../", where is a + * complete path segment not equal to "..", are removed from the + * buffer string. Removal of these path segments is performed + * iteratively, removing the leftmost matching pattern on each + * iteration, until no matching pattern remains. + * + * f) If the buffer string ends with "/..", where + * is a complete path segment not equal to "..", that + * "/.." is removed. + * + * To satisfy the "iterative" clause in (e), we need to collapse the + * string every time we find something that needs to be removed. Thus, + * we don't need to keep two pointers into the string: we only need a + * "current position" pointer. + */ + while (1) { + char *segp, *tmp; -/** - * xmlParseURIPathSegments: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze - * @slash: should we add a leading slash - * - * Parse an URI set of path segments - * - * path_segments = segment *( "/" segment ) - * segment = *pchar *( ";" param ) - * param = *pchar - * - * Returns 0 or the error code - */ -static int -xmlParseURIPathSegments(xmlURIPtr uri, const char **str, int slash) -{ - const char *cur; + /* At the beginning of each iteration of this loop, "cur" points to + * the first character of the segment we want to examine. + */ - if (str == NULL) - return (-1); + /* Find the end of the current segment. */ + segp = cur; + while ((segp[0] != '/') && (segp[0] != '\0')) + ++segp; - cur = *str; + /* If this is the last segment, we're done (we need at least two + * segments to meet the criteria for the (e) and (f) cases). + */ + if (segp[0] == '\0') + break; - do { - while ((IS_PCHAR(cur)) || - ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) - NEXT(cur); - while (*cur == ';') { - cur++; - while ((IS_PCHAR(cur)) || - ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) - NEXT(cur); + /* If the first segment is "..", or if the next segment _isn't_ "..", + * keep this segment and try the next one. + */ + ++segp; + if (((cur[0] == '.') && (cur[1] == '.') && (segp == cur+3)) + || ((segp[0] != '.') || (segp[1] != '.') + || ((segp[2] != '/') && (segp[2] != '\0')))) { + cur = segp; + continue; } - if (*cur != '/') - break; - cur++; - } while (1); - if (uri != NULL) { - int len, len2 = 0; - char *path; - /* - * Concat the set of path segments to the current path + /* If we get here, remove this segment and the next one and back up + * to the previous segment (if there is one), to implement the + * "iteratively" clause. It's pretty much impossible to back up + * while maintaining two pointers into the buffer, so just compact + * the whole buffer now. */ - len = cur - *str; - if (slash) - len++; - if (uri->path != NULL) { - len2 = strlen(uri->path); - len += len2; - } - path = (char *) xmlMallocAtomic(len + 1); - if (path == NULL) { - xmlGenericError(xmlGenericErrorContext, - "xmlParseURIPathSegments: out of memory\n"); - *str = cur; - return (-1); - } - if (uri->path != NULL) - memcpy(path, uri->path, len2); - if (slash) { - path[len2] = '/'; - len2++; + /* If this is the end of the buffer, we're done. */ + if (segp[2] == '\0') { + cur[0] = '\0'; + break; } - path[len2] = 0; - if (cur - *str > 0) { - if (uri->cleanup & 2) { - memcpy(&path[len2], *str, cur - *str); - path[len2 + (cur - *str)] = 0; - } else - xmlURIUnescapeString(*str, cur - *str, &path[len2]); - } - if (uri->path != NULL) - xmlFree(uri->path); - uri->path = path; - } - *str = cur; - return (0); -} + /* Valgrind complained, strcpy(cur, segp + 3); */ + /* string will overlap, do not use strcpy */ + tmp = cur; + segp += 3; + while ((*tmp++ = *segp++) != 0); -/** - * xmlParseURIAuthority: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze - * - * Parse the authority part of an URI. - * - * authority = server | reg_name - * server = [ [ userinfo "@" ] hostport ] - * reg_name = 1*( unreserved | escaped | "$" | "," | ";" | ":" | - * "@" | "&" | "=" | "+" ) - * - * Note : this is completely ambiguous since reg_name is allowed to - * use the full set of chars in use by server: - * - * 3.2.1. Registry-based Naming Authority - * - * The structure of a registry-based naming authority is specific - * to the URI scheme, but constrained to the allowed characters - * for an authority component. - * - * Returns 0 or the error code - */ -static int -xmlParseURIAuthority(xmlURIPtr uri, const char **str) { - const char *cur; - int ret; + /* If there are no previous segments, then keep going from here. */ + segp = cur; + while ((segp > path) && ((--segp)[0] == '/')) + ; + if (segp == path) + continue; - if (str == NULL) - return(-1); - - cur = *str; + /* "segp" is pointing to the end of a previous segment; find it's + * start. We need to back up to the previous segment and start + * over with that to handle things like "foo/bar/../..". If we + * don't do this, then on the first pass we'll remove the "bar/..", + * but be pointing at the second ".." so we won't realize we can also + * remove the "foo/..". + */ + cur = segp; + while ((cur > path) && (cur[-1] != '/')) + --cur; + } + out[0] = '\0'; /* - * try first to parse it as a server string. + * g) If the resulting buffer string still begins with one or more + * complete path segments of "..", then the reference is + * considered to be in error. Implementations may handle this + * error by retaining these components in the resolved path (i.e., + * treating them as part of the final URI), by removing them from + * the resolved path (i.e., discarding relative levels above the + * root), or by avoiding traversal of the reference. + * + * We discard them from the final path. */ - ret = xmlParseURIServer(uri, str); - if ((ret == 0) && (*str != NULL) && - ((**str == 0) || (**str == '/') || (**str == '?'))) - return(0); - *str = cur; + if (path[0] == '/') { + cur = path; + while ((cur[0] == '/') && (cur[1] == '.') && (cur[2] == '.') + && ((cur[3] == '/') || (cur[3] == '\0'))) + cur += 3; - /* - * failed, fallback to reg_name - */ - if (!IS_REG_NAME(cur)) { - return(5); - } - NEXT(cur); - while (IS_REG_NAME(cur)) NEXT(cur); - if (uri != NULL) { - if (uri->server != NULL) xmlFree(uri->server); - uri->server = NULL; - if (uri->user != NULL) xmlFree(uri->user); - uri->user = NULL; - if (uri->authority != NULL) xmlFree(uri->authority); - if (uri->cleanup & 2) - uri->authority = STRNDUP(*str, cur - *str); - else - uri->authority = xmlURIUnescapeString(*str, cur - *str, NULL); + if (cur != path) { + out = path; + while (cur[0] != '\0') + (out++)[0] = (cur++)[0]; + out[0] = 0; + } } - *str = cur; - return(0); -} - -/** - * xmlParseURIHierPart: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze - * - * Parse an URI hierarchical part - * - * hier_part = ( net_path | abs_path ) [ "?" query ] - * abs_path = "/" path_segments - * net_path = "//" authority [ abs_path ] - * - * Returns 0 or the error code - */ -static int -xmlParseURIHierPart(xmlURIPtr uri, const char **str) { - int ret; - const char *cur; - - if (str == NULL) - return(-1); - - cur = *str; - if ((cur[0] == '/') && (cur[1] == '/')) { - cur += 2; - ret = xmlParseURIAuthority(uri, &cur); - if (ret != 0) - return(ret); - if (cur[0] == '/') { - cur++; - ret = xmlParseURIPathSegments(uri, &cur, 1); - } - } else if (cur[0] == '/') { - cur++; - ret = xmlParseURIPathSegments(uri, &cur, 1); - } else { - return(4); - } - if (ret != 0) - return(ret); - if (*cur == '?') { - cur++; - ret = xmlParseURIQuery(uri, &cur); - if (ret != 0) - return(ret); - } - *str = cur; return(0); } -/** - * xmlParseAbsoluteURI: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze - * - * Parse an URI reference string and fills in the appropriate fields - * of the @uri structure - * - * absoluteURI = scheme ":" ( hier_part | opaque_part ) - * - * Returns 0 or the error code - */ -static int -xmlParseAbsoluteURI(xmlURIPtr uri, const char **str) { - int ret; - const char *cur; - - if (str == NULL) - return(-1); - - cur = *str; - - ret = xmlParseURIScheme(uri, str); - if (ret != 0) return(ret); - if (**str != ':') { - *str = cur; +static int is_hex(char c) { + if (((c >= '0') && (c <= '9')) || + ((c >= 'a') && (c <= 'f')) || + ((c >= 'A') && (c <= 'F'))) return(1); - } - (*str)++; - if (**str == '/') - return(xmlParseURIHierPart(uri, str)); - return(xmlParseURIOpaquePart(uri, str)); + return(0); } /** - * xmlParseRelativeURI: - * @uri: pointer to an URI structure - * @str: pointer to the string to analyze + * xmlURIUnescapeString: + * @str: the string to unescape + * @len: the length in bytes to unescape (or <= 0 to indicate full string) + * @target: optional destination buffer * - * Parse an relative URI string and fills in the appropriate fields - * of the @uri structure - * - * relativeURI = ( net_path | abs_path | rel_path ) [ "?" query ] - * abs_path = "/" path_segments - * net_path = "//" authority [ abs_path ] - * rel_path = rel_segment [ abs_path ] + * Unescaping routine, but does not check that the string is an URI. The + * output is a direct unsigned char translation of %XX values (no encoding) + * Note that the length of the result can only be smaller or same size as + * the input string. * - * Returns 0 or the error code + * Returns a copy of the string, but unescaped, will return NULL only in case + * of error */ -static int -xmlParseRelativeURI(xmlURIPtr uri, const char **str) { - int ret = 0; - const char *cur; +char * +xmlURIUnescapeString(const char *str, int len, char *target) { + char *ret, *out; + const char *in; if (str == NULL) - return(-1); - - cur = *str; - if ((cur[0] == '/') && (cur[1] == '/')) { - cur += 2; - ret = xmlParseURIAuthority(uri, &cur); - if (ret != 0) - return(ret); - if (cur[0] == '/') { - cur++; - ret = xmlParseURIPathSegments(uri, &cur, 1); + return(NULL); + if (len <= 0) len = strlen(str); + if (len < 0) return(NULL); + + if (target == NULL) { + ret = (char *) xmlMallocAtomic(len + 1); + if (ret == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlURIUnescapeString: out of memory\n"); + return(NULL); } - } else if (cur[0] == '/') { - cur++; - ret = xmlParseURIPathSegments(uri, &cur, 1); - } else if (cur[0] != '#' && cur[0] != '?') { - ret = xmlParseURIRelSegment(uri, &cur); - if (ret != 0) - return(ret); - if (cur[0] == '/') { - cur++; - ret = xmlParseURIPathSegments(uri, &cur, 1); + } else + ret = target; + in = str; + out = ret; + while(len > 0) { + if ((len > 2) && (*in == '%') && (is_hex(in[1])) && (is_hex(in[2]))) { + in++; + if ((*in >= '0') && (*in <= '9')) + *out = (*in - '0'); + else if ((*in >= 'a') && (*in <= 'f')) + *out = (*in - 'a') + 10; + else if ((*in >= 'A') && (*in <= 'F')) + *out = (*in - 'A') + 10; + in++; + if ((*in >= '0') && (*in <= '9')) + *out = *out * 16 + (*in - '0'); + else if ((*in >= 'a') && (*in <= 'f')) + *out = *out * 16 + (*in - 'a') + 10; + else if ((*in >= 'A') && (*in <= 'F')) + *out = *out * 16 + (*in - 'A') + 10; + in++; + len -= 3; + out++; + } else { + *out++ = *in++; + len--; } } - if (ret != 0) - return(ret); - if (*cur == '?') { - cur++; - ret = xmlParseURIQuery(uri, &cur); - if (ret != 0) - return(ret); - } - *str = cur; + *out = 0; return(ret); } /** - * xmlParseURIReference: - * @uri: pointer to an URI structure - * @str: the string to analyze + * xmlURIEscapeStr: + * @str: string to escape + * @list: exception list string of chars not to escape * - * Parse an URI reference string and fills in the appropriate fields - * of the @uri structure - * - * URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ] + * This routine escapes a string to hex, ignoring reserved characters (a-z) + * and the characters in the exception list. * - * Returns 0 or the error code + * Returns a new escaped string or NULL in case of error. */ -int -xmlParseURIReference(xmlURIPtr uri, const char *str) { - int ret; - const char *tmp = str; +xmlChar * +xmlURIEscapeStr(const xmlChar *str, const xmlChar *list) { + xmlChar *ret, ch; + xmlChar *temp; + const xmlChar *in; + + unsigned int len, out; if (str == NULL) - return(-1); - xmlCleanURI(uri); + return(NULL); + if (str[0] == 0) + return(xmlStrdup(str)); + len = xmlStrlen(str); + if (!(len > 0)) return(NULL); - /* - * Try first to parse absolute refs, then fallback to relative if - * it fails. - */ - ret = xmlParseAbsoluteURI(uri, &str); - if (ret != 0) { - xmlCleanURI(uri); - str = tmp; - ret = xmlParseRelativeURI(uri, &str); - } - if (ret != 0) { - xmlCleanURI(uri); - return(ret); + len += 20; + ret = (xmlChar *) xmlMallocAtomic(len); + if (ret == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlURIEscapeStr: out of memory\n"); + return(NULL); } + in = (const xmlChar *) str; + out = 0; + while(*in != 0) { + if (len - out <= 3) { + len += 20; + temp = (xmlChar *) xmlRealloc(ret, len); + if (temp == NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlURIEscapeStr: out of memory\n"); + xmlFree(ret); + return(NULL); + } + ret = temp; + } + + ch = *in; + + if ((ch != '@') && (!IS_UNRESERVED(ch)) && (!xmlStrchr(list, ch))) { + unsigned char val; + ret[out++] = '%'; + val = ch >> 4; + if (val <= 9) + ret[out++] = '0' + val; + else + ret[out++] = 'A' + val - 0xA; + val = ch & 0xF; + if (val <= 9) + ret[out++] = '0' + val; + else + ret[out++] = 'A' + val - 0xA; + in++; + } else { + ret[out++] = *in++; + } - if (*str == '#') { - str++; - ret = xmlParseURIFragment(uri, &str); - if (ret != 0) return(ret); - } - if (*str != 0) { - xmlCleanURI(uri); - return(1); } - return(0); + ret[out] = 0; + return(ret); } /** - * xmlParseURI: - * @str: the URI string to analyze + * xmlURIEscape: + * @str: the string of the URI to escape * - * Parse an URI - * - * URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ] + * Escaping routine, does not do validity checks ! + * It will try to escape the chars needing this, but this is heuristic + * based it's impossible to be sure. * - * Returns a newly built xmlURIPtr or NULL in case of error + * Returns an copy of the string, but escaped + * + * 25 May 2001 + * Uses xmlParseURI and xmlURIEscapeStr to try to escape correctly + * according to RFC2396. + * - Carl Douglas */ -xmlURIPtr -xmlParseURI(const char *str) { +xmlChar * +xmlURIEscape(const xmlChar * str) +{ + xmlChar *ret, *segment = NULL; xmlURIPtr uri; - int ret; + int ret2; + +#define NULLCHK(p) if(!p) { \ + xmlGenericError(xmlGenericErrorContext, \ + "xmlURIEscape: out of memory\n"); \ + xmlFreeURI(uri); \ + return NULL; } \ if (str == NULL) - return(NULL); + return (NULL); + uri = xmlCreateURI(); if (uri != NULL) { - ret = xmlParseURIReference(uri, str); - if (ret) { - xmlFreeURI(uri); - return(NULL); - } + /* + * Allow escaping errors in the unescaped form + */ + uri->cleanup = 1; + ret2 = xmlParseURIReference(uri, (const char *)str); + if (ret2) { + xmlFreeURI(uri); + return (NULL); + } } - return(uri); -} -/** - * xmlParseURIRaw: - * @str: the URI string to analyze - * @raw: if 1 unescaping of URI pieces are disabled - * - * Parse an URI but allows to keep intact the original fragments. - * - * URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ] - * - * Returns a newly built xmlURIPtr or NULL in case of error - */ -xmlURIPtr -xmlParseURIRaw(const char *str, int raw) { - xmlURIPtr uri; - int ret; + if (!uri) + return NULL; - if (str == NULL) - return(NULL); - uri = xmlCreateURI(); - if (uri != NULL) { - if (raw) { - uri->cleanup |= 2; - } - ret = xmlParseURIReference(uri, str); - if (ret) { - xmlFreeURI(uri); - return(NULL); - } + ret = NULL; + + if (uri->scheme) { + segment = xmlURIEscapeStr(BAD_CAST uri->scheme, BAD_CAST "+-."); + NULLCHK(segment) + ret = xmlStrcat(ret, segment); + ret = xmlStrcat(ret, BAD_CAST ":"); + xmlFree(segment); } - return(uri); + + if (uri->authority) { + segment = + xmlURIEscapeStr(BAD_CAST uri->authority, BAD_CAST "/?;:@"); + NULLCHK(segment) + ret = xmlStrcat(ret, BAD_CAST "//"); + ret = xmlStrcat(ret, segment); + xmlFree(segment); + } + + if (uri->user) { + segment = xmlURIEscapeStr(BAD_CAST uri->user, BAD_CAST ";:&=+$,"); + NULLCHK(segment) + ret = xmlStrcat(ret,BAD_CAST "//"); + ret = xmlStrcat(ret, segment); + ret = xmlStrcat(ret, BAD_CAST "@"); + xmlFree(segment); + } + + if (uri->server) { + segment = xmlURIEscapeStr(BAD_CAST uri->server, BAD_CAST "/?;:@"); + NULLCHK(segment) + if (uri->user == NULL) + ret = xmlStrcat(ret, BAD_CAST "//"); + ret = xmlStrcat(ret, segment); + xmlFree(segment); + } + + if (uri->port) { + xmlChar port[10]; + + snprintf((char *) port, 10, "%d", uri->port); + ret = xmlStrcat(ret, BAD_CAST ":"); + ret = xmlStrcat(ret, port); + } + + if (uri->path) { + segment = + xmlURIEscapeStr(BAD_CAST uri->path, BAD_CAST ":@&=+$,/?;"); + NULLCHK(segment) + ret = xmlStrcat(ret, segment); + xmlFree(segment); + } + + if (uri->query_raw) { + ret = xmlStrcat(ret, BAD_CAST "?"); + ret = xmlStrcat(ret, BAD_CAST uri->query_raw); + } + else if (uri->query) { + segment = + xmlURIEscapeStr(BAD_CAST uri->query, BAD_CAST ";/?:@&=+,$"); + NULLCHK(segment) + ret = xmlStrcat(ret, BAD_CAST "?"); + ret = xmlStrcat(ret, segment); + xmlFree(segment); + } + + if (uri->opaque) { + segment = xmlURIEscapeStr(BAD_CAST uri->opaque, BAD_CAST ""); + NULLCHK(segment) + ret = xmlStrcat(ret, segment); + xmlFree(segment); + } + + if (uri->fragment) { + segment = xmlURIEscapeStr(BAD_CAST uri->fragment, BAD_CAST "#"); + NULLCHK(segment) + ret = xmlStrcat(ret, BAD_CAST "#"); + ret = xmlStrcat(ret, segment); + xmlFree(segment); + } + + xmlFreeURI(uri); +#undef NULLCHK + + return (ret); } /************************************************************************ -- cgit v1.2.3