diff options
Diffstat (limited to 'src/rpminfo.c')
| -rw-r--r-- | src/rpminfo.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/rpminfo.c b/src/rpminfo.c new file mode 100644 index 0000000..bf20962 --- /dev/null +++ b/src/rpminfo.c @@ -0,0 +1,202 @@ +/** + * 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; +} |