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/**
* Print RPM package name, version, and revision.
* Depends on RPM = 5.3.5
*
* Build with:
* gcc rpminfo.c -o rpminfo -Wall -lrpm -lrpmdb -lrpmio -I/usr/include/rpm
*
* Written by Lucas C. Villa Real <lucasvr@gobolinux.org>
* Released under the GNU GPL version 2 or above.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <errno.h>
#include <rpm/rpmio.h>
#include <rpm/rpmcli.h>
#include <rpm/pkgio.h>
#include <rpm/rpmds.h>
struct optinfo {
const char *name;
const char *desc;
void (*fn)(Header *);
};
void generic_print_msg(Header *hdr, const char *fmt)
{
char *value = headerSprintf(*hdr, fmt, NULL, NULL, NULL);
if (value) {
printf("%s\n", value);
free(value);
}
}
void print_arch(Header *hdr)
{
generic_print_msg(hdr, "%{arch}");
}
void print_compressor(Header *hdr)
{
generic_print_msg(hdr, "%{payloadcompressor}");
}
void print_dependencies(Header *hdr)
{
rpmds depinfo = rpmdsNew(*hdr, RPMTAG_REQUIRENAME, 0);
/* init iterator */
depinfo = rpmdsInit(depinfo);
while (rpmdsNext(depinfo) >= 0) {
const char *name = rpmdsN(depinfo);
const char *version= rpmdsEVR(depinfo);
evrFlags flags = rpmdsFlags(depinfo);
printf("%s", name);
if (version && strlen(version)) {
if (flags)
printf(" ");
if (flags & RPMSENSE_LESS)
printf("<");
if (flags & RPMSENSE_GREATER)
printf(">");
if (RPMSENSE_EQUAL)
printf("=");
printf(" %s", version);
}
printf("\n");
}
rpmdsFree(depinfo);
}
void print_description(Header *hdr)
{
generic_print_msg(hdr, "%{description}");
}
void print_distribution(Header *hdr)
{
generic_print_msg(hdr, "%{distribution}");
}
void print_license(Header *hdr)
{
generic_print_msg(hdr, "%{license}");
}
void print_name(Header *hdr)
{
generic_print_msg(hdr, "%{name}");
}
void print_release(Header *hdr)
{
generic_print_msg(hdr, "%{release}");
}
void print_summary(Header *hdr)
{
generic_print_msg(hdr, "%{summary}");
}
void print_url(Header *hdr)
{
generic_print_msg(hdr, "%{url}");
}
void print_version(Header *hdr)
{
generic_print_msg(hdr, "%{version}");
}
static struct optinfo optinfo[] = {
{ "--arch", "architecture", print_arch },
{ "--compressor", "payload compressor", print_compressor },
{ "--dependencies", "package dependencies", print_dependencies },
{ "--description", "package description", print_description },
{ "--distribution", "distribution name", print_distribution },
{ "--license", "package license", print_license },
{ "--name", "package name", print_name },
{ "--release", "release number", print_release },
{ "--summary", "summary information", print_summary },
{ "--url", "project url", print_url },
{ "--version", "package version", print_version },
{ NULL, NULL, NULL }
};
void usage(char *appname, int retval)
{
int i;
fprintf(stderr, "Usage: %s OPTION <file.rpm>\n\n"
"Available (mutually-exclusive) options are:\n", appname);
for (i=0; optinfo[i].name; ++i)
fprintf(stderr, " %-17s %s\n", optinfo[i].name, optinfo[i].desc);
exit(retval);
}
void parse_args(int argc, char **argv, char **rpmfile, int *opt)
{
const int argc_option = 1;
const int argc_rpmfile = 2;
int i;
if (argc != 3)
usage(argv[0], 1);
*rpmfile = NULL;
*opt = -1;
for (i=0; optinfo[i].name; ++i) {
if (!strcmp(argv[argc_option], optinfo[i].name)) {
*opt = i;
break;
}
}
if (*opt == -1)
usage(argv[0], 1);
*rpmfile = argv[argc_rpmfile];
}
int main(int argc, char **argv)
{
int option = -1;
char *rpmfile = NULL;
parse_args(argc, argv, &rpmfile, &option);
FD_t fd = Fopen(rpmfile, "r.ufdio");
if (! fd || Ferror(fd)) {
fprintf(stderr, "Failed to open %s: %s\n", rpmfile, Fstrerror(fd));
return 1;
}
rpmVSFlags vsflags = 0;
vsflags |= RPMVSF_NOHDRCHK;
vsflags |= _RPMVSF_NODIGESTS;
vsflags |= _RPMVSF_NOSIGNATURES;
rpmts ts = rpmtsCreate();
rpmtsSetVSFlags(ts, vsflags);
Header hdr;
rpmRC rc = rpmReadPackageFile(ts, fd, rpmfile, &hdr);
if (rc != RPMRC_OK) {
fprintf(stderr, "Failed to read package file %s\n", rpmfile);
return 1;
}
/* handle option */
optinfo[option].fn(&hdr);
headerFree(hdr);
rpmtsFree(ts);
Fclose(fd);
return 0;
}
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