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/*
* dpkg-deb - construction and deconstruction of *.deb archives
* info.c - providing information
*
* Copyright © 1994,1995 Ian Jackson <ian@chiark.greenend.org.uk>
* Copyright © 2001 Wichert Akkerman
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2,
* or (at your option) any later version.
*
* This is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with dpkg; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <compat.h>
#include <dpkg/i18n.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <unistd.h>
#include <dirent.h>
#include <limits.h>
#include <ctype.h>
#include <dpkg/dpkg.h>
#include <dpkg/dpkg-db.h>
#include <dpkg/buffer.h>
#include <dpkg/subproc.h>
#include <dpkg/myopt.h>
#include "dpkg-deb.h"
static void cu_info_prepare(int argc, void **argv) {
pid_t c1;
int status;
char *directory;
struct stat stab;
directory= (char*)(argv[0]);
if (chdir("/")) { perror(_("failed to chdir to `/' for cleanup")); return; }
if (lstat(directory,&stab) && errno==ENOENT) return;
if ((c1= fork()) == -1) { perror(_("failed to fork for cleanup")); return; }
if (!c1) {
execlp(RM, "rm", "-rf", directory, NULL);
perror(_("failed to exec rm for cleanup")); _exit(1);
}
if (waitpid(c1,&status,0) != c1) { perror(_("failed to wait for rm cleanup")); return; }
if (status) { fprintf(stderr,_("rm cleanup failed, code %d\n"),status); }
}
static void info_prepare(const char *const **argvp,
const char **debarp,
const char **directoryp,
int admininfo) {
static char *dbuf;
pid_t c1;
*debarp= *(*argvp)++;
if (!*debarp) badusage(_("--%s needs a .deb filename argument"),cipaction->olong);
/* This creates a temporary directory, so ignore the warning. */
if ((dbuf= tempnam(NULL,"dpkg")) == NULL)
ohshite(_("failed to make temporary directoryname"));
*directoryp= dbuf;
if (!(c1= m_fork())) {
execlp(RM, "rm", "-rf", dbuf, NULL);
ohshite(_("failed to exec rm -rf"));
}
waitsubproc(c1,"rm -rf",0);
push_cleanup(cu_info_prepare, -1, NULL, 0, 1, (void *)dbuf);
extracthalf(*debarp, dbuf, "mx", admininfo);
}
static int ilist_select(const struct dirent *de) {
return strcmp(de->d_name,".") && strcmp(de->d_name,"..");
}
static void info_spew(const char *debar, const char *directory,
const char *const *argv) {
const char *component;
size_t pathlen;
char *controlfile = NULL;
FILE *co;
int re= 0;
while ((component = *argv++) != NULL) {
pathlen = strlen(directory) + strlen(component) + 2;
controlfile = m_realloc(controlfile, pathlen);
memset(controlfile, 0, sizeof(controlfile));
strcat(controlfile, directory);
strcat(controlfile, "/");
strcat(controlfile, component);
co= fopen(controlfile,"r");
if (co) {
stream_fd_copy(co, 1, -1, _("info_spew"));
} else if (errno == ENOENT) {
fprintf(stderr,
_("dpkg-deb: `%.255s' contains no control component `%.255s'\n"),
debar, component);
re++;
} else {
ohshite(_("open component `%.255s' (in %.255s) failed in an unexpected way"),
component, directory);
}
}
free(controlfile);
if (re==1)
ohshit(_("One requested control component is missing"));
else if (re>1)
ohshit(_("%d requested control components are missing"), re);
}
static void info_list(const char *debar, const char *directory) {
char interpreter[INTERPRETER_MAX+1], *p;
int il, lines;
struct dirent **cdlist, *cdep;
int cdn;
FILE *cc;
struct stat stab;
int c;
cdn= scandir(".", &cdlist, &ilist_select, alphasort);
if (cdn == -1) ohshite(_("cannot scan directory `%.255s'"),directory);
while (cdn-- >0) {
cdep= *cdlist++;
if (stat(cdep->d_name,&stab))
ohshite(_("cannot stat `%.255s' (in `%.255s')"),cdep->d_name,directory);
if (S_ISREG(stab.st_mode)) {
if (!(cc= fopen(cdep->d_name,"r")))
ohshite(_("cannot open `%.255s' (in `%.255s')"),cdep->d_name,directory);
lines = 0;
interpreter[0] = '\0';
if ((c= getc(cc))== '#') {
if ((c= getc(cc))== '!') {
while ((c= getc(cc))== ' ');
p=interpreter; *p++='#'; *p++='!'; il=2;
while (il<INTERPRETER_MAX && !isspace(c) && c!=EOF) {
*p++= c; il++; c= getc(cc);
}
*p++ = '\0';
if (c=='\n') lines++;
}
}
while ((c= getc(cc))!= EOF) { if (c == '\n') lines++; }
if (ferror(cc)) ohshite(_("failed to read `%.255s' (in `%.255s')"),
cdep->d_name,directory);
fclose(cc);
printf(_(" %7ld bytes, %5d lines %c %-20.127s %.127s\n"),
(long)stab.st_size, lines, S_IXUSR & stab.st_mode ? '*' : ' ',
cdep->d_name, interpreter);
} else {
printf(_(" not a plain file %.255s\n"), cdep->d_name);
}
}
if (!(cc= fopen("control","r"))) {
if (errno != ENOENT) ohshite(_("failed to read `control' (in `%.255s')"),directory);
fputs(_("(no `control' file in control archive!)\n"), stdout);
} else {
lines= 1;
while ((c= getc(cc))!= EOF) {
if (lines)
putc(' ', stdout);
putc(c, stdout);
lines= c=='\n';
}
if (!lines)
putc('\n', stdout);
}
m_output(stdout, _("<standard output>"));
}
static void info_field(const char *debar, const char *directory,
const char *const *fields, int showfieldname) {
FILE *cc;
char fieldname[MAXFIELDNAME+1];
char *pf;
const char *const *fp;
int doing, c, lno, fnl;
if (!(cc= fopen("control","r"))) ohshite(_("could not open the `control' component"));
doing= 1; lno= 1;
for (;;) {
c= getc(cc); if (c==EOF) { doing=0; break; }
if (c == '\n') { lno++; doing=1; continue; }
if (!isspace(c)) {
doing= 0;
for (pf=fieldname, fnl=0;
fnl <= MAXFIELDNAME && c!=EOF && !isspace(c) && c!=':';
c= getc(cc)) { *pf++= c; fnl++; }
*pf++ = '\0';
doing= fnl >= MAXFIELDNAME || c=='\n' || c==EOF;
for (fp=fields; !doing && *fp; fp++)
if (!strcasecmp(*fp,fieldname)) doing=1;
if (showfieldname) {
if (doing)
fputs(fieldname,stdout);
} else {
if (c==':') c= getc(cc);
while (c != '\n' && isspace(c)) c= getc(cc);
}
}
for(;;) {
if (c == EOF) break;
if (doing) putc(c,stdout);
if (c == '\n') { lno++; break; }
c= getc(cc);
}
if (c == EOF) break;
}
if (ferror(cc)) ohshite(_("failed during read of `control' component"));
if (doing) putc('\n',stdout);
m_output(stdout, _("<standard output>"));
}
void do_showinfo(const char* const* argv) {
const char *debar, *directory;
struct pkginfo *pkg;
struct lstitem* fmt = parseformat(showformat);
if (!fmt)
ohshit(_("Error in format"));
info_prepare(&argv,&debar,&directory,1);
parsedb(CONTROLFILE, pdb_ignorefiles, &pkg, NULL, NULL);
show1package(fmt,pkg);
}
void do_info(const char *const *argv) {
const char *debar, *directory;
if (*argv && argv[1]) {
info_prepare(&argv,&debar,&directory,1);
info_spew(debar,directory, argv);
} else {
info_prepare(&argv,&debar,&directory,2);
info_list(debar,directory);
}
}
void do_field(const char *const *argv) {
const char *debar, *directory;
info_prepare(&argv,&debar,&directory,1);
if (*argv) {
info_field(debar, directory, argv, argv[1] != NULL);
} else {
static const char *const controlonly[] = { "control", NULL };
info_spew(debar,directory, controlonly);
}
}
void do_contents(const char *const *argv) {
const char *debar;
if (!(debar= *argv++) || *argv) badusage(_("--contents takes exactly one argument"));
extracthalf(debar, NULL, "tv", 0);
}
/* vi: sw=2
*/
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