- add :base64 and :armor format extensions, dump binary tags in hex.

- proof-of-concept pubkey retrieval from RPM-{PGP,GPG}-KEY.

CVS patchset: 5126
CVS date: 2001/10/20 20:28:56

1 files changed, 215 insertions, 0 deletions

diff --git a/rpmio/tring.c b/rpmio/tring.c
new file mode 100644
index 000000000..8a231d244
--- /dev/null
+++ b/rpmio/tring.c
@@ -0,0 +1,215 @@
+#include "system.h"
+#include "rpmio_internal.h"
+#include "misc.h"
+#include "popt.h"
+#include "debug.h"
+
+static int rpmSlurp(const char * fn, const byte ** bp, ssize_t * blenp)
+{
+    static ssize_t blenmax = (8 * BUFSIZ);
+    ssize_t blen = 0;
+    byte * b = NULL;
+    ssize_t size;
+    FD_t fd;
+    int rc = 0;
+
+    fd = Fopen(fn, "r.ufdio");
+    if (fd == NULL || Ferror(fd)) {
+	rc = 2;
+	goto exit;
+    }
+
+    size = fdSize(fd);
+    blen = (size >= 0 ? size : blenmax);
+    if (blen) {
+	int nb;
+	b = xmalloc(blen+1);
+	b[0] = '\0';
+	nb = Fread(b, sizeof(*b), blen, fd);
+	if (Ferror(fd) || (size > 0 && nb != blen)) {
+	    rc = 1;
+	    goto exit;
+	}
+	if (blen == blenmax && nb < blen) {
+	    blen = nb;
+	    b = xrealloc(b, blen+1);
+	}
+	b[blen] = '\0';
+    }
+
+exit:
+    if (fd) (void) Fclose(fd);
+	
+    if (rc) {
+	if (b) free(b);
+	b = NULL;
+	blen = 0;
+    }
+
+    if (bp) *bp = b;
+    else if (b) free(b);
+
+    if (blenp) *blenp = blen;
+
+    return rc;
+}
+
+static int rpmReadPgpPkt(const char * fn, const byte ** pkt, size_t * pktlen)
+{
+    const byte * b = NULL;
+    ssize_t blen;
+    const char * enc = NULL;
+    const char * crcenc = NULL;
+    byte * dec;
+    byte * crcdec;
+    size_t declen;
+    size_t crclen;
+    uint32 crcpkt, crc;
+    const char * armortype = NULL;
+    char * t, * te;
+    int pstate = 0;
+    int ec = 1;	/* XXX assume failure */
+    int rc;
+
+    rc = rpmSlurp(fn, &b, &blen);
+    if (rc || b == NULL || blen <= 0)
+	goto exit;
+
+    if (pgpIsPkt(b)) {
+	ec = 0;
+	goto exit;
+    }
+
+#define	TOKEQ(_s, _tok)	(!strncmp((_s), (_tok), sizeof(_tok)-1))
+
+    for (t = (char *)b; t && *t; t = te) {
+	if ((te = strchr(t, '\n')) == NULL)
+		te = t + strlen(t);
+	else
+		te++;
+
+	switch (pstate) {
+	case 0:
+	    armortype = NULL;
+	    if (!TOKEQ(t, "-----BEGIN PGP "))
+		continue;
+	    t += sizeof("-----BEGIN PGP ")-1;
+
+	    rc = pgpValTok(pgpArmorTbl, t, te);
+	    if (rc < 0)
+		goto exit;
+	    armortype = t;
+
+	    t = te - (sizeof("-----\n")-1);
+	    if (!TOKEQ(t, "-----\n"))
+		continue;
+	    *t = '\0';
+	    pstate++;
+	    break;
+	case 1:
+	    enc = NULL;
+	    rc = pgpValTok(pgpArmorKeyTbl, t, te);
+	    if (rc >= 0)
+		continue;
+	    if (*t != '\n') {
+		pstate = 0;
+		continue;
+	    }
+	    enc = te;		/* Start of encoded packets */
+	    pstate++;
+	    break;
+	case 2:
+	    crcenc = NULL;
+	    if (*t != '=')
+		continue;
+	    *t++ = '\0';	/* Terminate encoded packets */
+	    crcenc = t;		/* Start of encoded crc */
+	    pstate++;
+	    break;
+	case 3:
+	    pstate = 0;
+	    if (!TOKEQ(t, "-----END PGP "))
+		goto exit;
+	    *t = '\0';		/* Terminate encoded crc */
+	    t += sizeof("-----END PGP ")-1;
+
+	    if (armortype == NULL) /* XXX can't happen */
+		continue;
+	    rc = strncmp(t, armortype, strlen(armortype));
+	    if (rc)
+		continue;
+
+	    t = te - (sizeof("-----\n")-1);
+	    if (!TOKEQ(t, "-----\n"))
+		goto exit;
+
+	    if (b64decode(crcenc, (void **)&crcdec, &crclen) != 0)
+		continue;
+	    crcpkt = pgpGrab(crcdec, crclen);
+	    free(crcdec);
+	    if (b64decode(enc, (void **)&dec, &declen) != 0)
+		goto exit;
+	    crc = pgpCRC(dec, declen);
+	    if (crcpkt != crc)
+		goto exit;
+	    free((void *)b);
+	    b = dec;
+	    blen = declen;
+	    ec = 0;
+	    goto exit;
+	    /*@notreached@*/ break;
+	}
+    }
+
+exit:
+    if (ec == 0 && pkt)
+	*pkt = b;
+    else if (b != NULL)
+	free((void *)b);
+    if (pktlen)
+	*pktlen = blen;
+    return rc;
+}
+
+static int printing = 0;
+static int _debug = 0;
+
+static struct poptOption optionsTable[] = {
+ { "print", 'p', POPT_ARG_VAL,	&printing, 1,		NULL, NULL },
+ { "noprint", 'n', POPT_ARG_VAL, &printing, 0,		NULL, NULL },
+ { "debug", 'd', POPT_ARG_VAL,	&_debug, -1,		NULL, NULL },
+  POPT_AUTOHELP
+  POPT_TABLEEND
+};
+
+int
+main (int argc, const char *argv[])
+{
+    poptContext optCon = poptGetContext(argv[0], argc, argv, optionsTable, 0);
+    rpmDigest dig;
+    const byte * pkt = NULL;
+    ssize_t pktlen;
+    const char ** args;
+    const char * fn;
+    int rc = 0;
+
+    while ((rc = poptGetNextOpt(optCon)) > 0)
+	;
+
+    if ((args = poptGetArgs(optCon)) != NULL)
+    while ((fn = *args++) != NULL) {
+	rc = rpmReadPgpPkt(fn, &pkt, &pktlen);
+	if (rc || pkt == NULL || pktlen <= 0)
+	    continue;
+
+fprintf(stderr, "===================== %s\n", fn);
+	dig = xcalloc(1, sizeof(*dig));
+	(void) pgpPrtPkts(pkt, pktlen, dig, printing);
+	free((void *)pkt);
+	pkt = NULL;
+	free((void *)dig);
+	dig = NULL;
+    }
+
+    return rc;
+}