From e587de6e8690a3036c34dcb92e606e81af3ddeee Mon Sep 17 00:00:00 2001
From: root <devnull@localhost>
Date: Thu, 28 Mar 1996 23:56:49 +0000
Subject: [PATCH] added doReSign()

CVS patchset: 485
CVS date: 1996/03/28 23:56:49
---
 checksig.c | 111 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 checksig.h |   2 ++
 2 files changed, 113 insertions(+)

diff --git a/checksig.c b/checksig.c
index ac80352..188f256 100644
--- a/checksig.c
+++ b/checksig.c
@@ -1,6 +1,7 @@
 /* checksig.c: verify the signature of an RPM */
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
 
@@ -9,6 +10,116 @@
 #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;
diff --git a/checksig.h b/checksig.h
index 6868286..a6884e4 100644
--- a/checksig.h
+++ b/checksig.h
@@ -3,4 +3,6 @@
 
 int doCheckSig(char **argv);
 
+int doReSign(char *passPhrase, char **argv);
+
 #endif
-- 
2.7.4