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/* checksig.c: verify the signature of an RPM */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include "checksig.h"
#include "rpmlib.h"
#include "rpmlead.h"
#include "signature.h"
int doReSign(char *passPhrase, char **argv)
{
int fd, ofd, count;
struct rpmlead lead;
unsigned short sigtype;
char *sig, *rpm, *sigtarget;
char tmprpm[1024];
unsigned char buffer[8192];
/* Figure out the signature type */
if ((sigtype = sigLookupType()) == RPMSIG_BAD) {
fprintf(stderr, "Bad signature type in rpmrc\n");
exit(1);
}
while (*argv) {
rpm = *argv++;
if ((fd = open(rpm, O_RDONLY, 0644)) < 0) {
fprintf(stderr, "%s: Open failed\n", rpm);
exit(1);
}
if (readLead(fd, &lead)) {
fprintf(stderr, "%s: readLead failed\n", rpm);
exit(1);
}
if (lead.major == 1) {
fprintf(stderr, "%s: Can't sign v1.0 RPM\n", rpm);
exit(1);
}
if (!readSignature(fd, lead.signature_type, (void **) &sig)) {
fprintf(stderr, "%s: readSignature failed\n", rpm);
exit(1);
}
if (sig) {
free(sig);
}
/* Write the rest to a temp file */
sigtarget = tempnam("/usr/tmp", "rpmbuild");
ofd = open(sigtarget, O_WRONLY|O_CREAT|O_TRUNC, 0644);
while ((count = read(fd, buffer, sizeof(buffer))) > 0) {
if (count == -1) {
perror("Couldn't read the header/archvie");
close(ofd);
unlink(sigtarget);
exit(1);
}
if (write(ofd, buffer, count) < 0) {
perror("Couldn't write header/archive to temp file");
close(ofd);
unlink(sigtarget);
exit(1);
}
}
close(fd);
close(ofd);
/* Start writing the new RPM */
sprintf(tmprpm, "%s.tmp", rpm);
ofd = open(tmprpm, O_WRONLY|O_CREAT|O_TRUNC, 0644);
lead.signature_type = sigtype;
if (writeLead(ofd, &lead)) {
perror("writeLead()");
close(ofd);
unlink(sigtarget);
unlink(tmprpm);
exit(1);
}
/* Generate the signature */
if (makeSignature(sigtarget, sigtype, ofd, passPhrase)) {
fprintf(stderr, "makeSignature() failed\n");
close(ofd);
unlink(sigtarget);
unlink(tmprpm);
exit(1);
}
/* Append the header and archive */
fd = open(sigtarget, O_RDONLY);
while ((count = read(fd, buffer, sizeof(buffer))) > 0) {
if (count == -1) {
perror("Couldn't read sigtarget");
close(ofd);
close(fd);
unlink(sigtarget);
unlink(tmprpm);
exit(1);
}
if (write(ofd, buffer, count) < 0) {
perror("Couldn't write package");
close(ofd);
close(fd);
unlink(sigtarget);
unlink(tmprpm);
exit(1);
}
}
close(fd);
close(ofd);
unlink(sigtarget);
/* Move it in to place */
unlink(rpm);
rename(tmprpm, rpm);
}
return 0;
}
int doCheckSig(char **argv)
{
int fd;
struct rpmlead lead;
char *sig, *rpm;
char result[1024];
int res = 0;
int xres;
while (*argv) {
rpm = *argv++;
if ((fd = open(rpm, O_RDONLY, 0644)) < 0) {
fprintf(stderr, "%s: Open failed\n", rpm);
res = -1;
continue;
}
if (readLead(fd, &lead)) {
fprintf(stderr, "%s: readLead failed\n", rpm);
res = -1;
continue;
}
if (lead.major == 1) {
fprintf(stderr, "%s: No signature available (v1.0 RPM)\n", rpm);
res = -1;
continue;
}
if (!readSignature(fd, lead.signature_type, (void **) &sig)) {
fprintf(stderr, "%s: readSignature failed\n", rpm);
res = -1;
continue;
}
xres = verifySignature(fd, lead.signature_type, sig, result);
if (!xres) {
if (isVerbose()) {
printf("%s: %s", rpm, result);
}
printf("%s: Signature OK.\n", rpm);
} else {
if (isVerbose()) {
fprintf(stderr, "%s: %s", rpm, result);
}
if (xres == RPMSIG_NOSIG) {
fprintf(stderr, "%s: No signature available.\n", rpm);
} else if (xres == RPMSIG_UNKNOWNSIG) {
fprintf(stderr, "%s: Unknown signature type.\n", rpm);
} else {
fprintf(stderr, "%s: Signature NOT OK!\n", rpm);
}
res = -1;
}
close(fd);
}
return res;
}
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