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-rw-r--r--isomd5sum/Makefile6
-rw-r--r--isomd5sum/checkisomd5.c303
-rw-r--r--isomd5sum/implantisomd5.c197
-rw-r--r--isomd5sum/libcheckisomd5.c307
-rw-r--r--isomd5sum/libcheckisomd5.h6
-rw-r--r--isomd5sum/libimplantisomd5.c204
-rw-r--r--isomd5sum/libimplantisomd5.h5
-rw-r--r--isomd5sum/md5.c2
8 files changed, 536 insertions, 494 deletions
diff --git a/isomd5sum/Makefile b/isomd5sum/Makefile
index 1a3995508..3166c654e 100644
--- a/isomd5sum/Makefile
+++ b/isomd5sum/Makefile
@@ -2,8 +2,10 @@ include ../Makefile.inc
all:
gcc -c -O -g -D_FILE_OFFSET_BITS=64 md5.c
- gcc -O -g -D_FILE_OFFSET_BITS=64 -o implantisomd5 implantisomd5.c md5.o -lm -lpopt
- gcc -O -g -D_FILE_OFFSET_BITS=64 -o checkisomd5 checkisomd5.c md5.o -lm
+ gcc -c -O -g -D_FILE_OFFSET_BITS=64 libimplantisomd5.c
+ gcc -O -g -D_FILE_OFFSET_BITS=64 -o implantisomd5 implantisomd5.c libimplantisomd5.o md5.o -lm -lpopt
+ gcc -c -O -g -D_FILE_OFFSET_BITS=64 libcheckisomd5.c
+ gcc -O -g -D_FILE_OFFSET_BITS=64 -o checkisomd5 checkisomd5.c libcheckisomd5.o md5.o -lm
install:
install -m 755 implantisomd5 $(DESTDIR)/$(RUNTIMEDIR)
diff --git a/isomd5sum/checkisomd5.c b/isomd5sum/checkisomd5.c
index 5ef184a86..177d10ef4 100644
--- a/isomd5sum/checkisomd5.c
+++ b/isomd5sum/checkisomd5.c
@@ -3,310 +3,9 @@
/* Michael Fulbright msf@redhat.com */
#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
#include "md5.h"
-
-#define APPDATA_OFFSET 883
-#define SIZE_OFFSET 84
-
-#define MAX(x, y) ((x > y) ? x : y)
-#define MIN(x, y) ((x < y) ? x : y)
-
-/* finds primary volume descriptor and returns info from it */
-/* mediasum must be a preallocated buffer at least 33 bytes long */
-int parsepvd(int isofd, char *mediasum, int *skipsectors, long long *isosize, int *supported) {
- unsigned char buf[2048];
- unsigned char buf2[512];
- unsigned char tmpbuf[512];
- int skipfnd, md5fnd, supportedfnd;
- unsigned int loc;
- long long offset;
- unsigned char *p;
-
- *supported = 0;
-
- if (lseek(isofd, (off_t)(16L * 2048L), SEEK_SET) == -1)
- return ((long long)-1);
-
- offset = (16L * 2048L);
- for (;1;) {
- if (read(isofd, buf, 2048) <=0)
- return ((long long)-1);
-
- if (buf[0] == 1)
- /* found primary volume descriptor */
- break;
- else if (buf[0] == 255)
- /* hit end and didn't find primary volume descriptor */
- return ((long long)-1);
- offset += 2048L;
- }
-
- /* read out md5sum */
- memcpy(buf2, buf + APPDATA_OFFSET, 512);
- buf2[511] = '\0';
-
- md5fnd = 0;
- skipfnd = 0;
- supportedfnd = 0;
- loc = 0;
- while (loc < 512) {
- if (!strncmp(buf2 + loc, "ISO MD5SUM = ", 13)) {
-
- /* make sure we dont walk off end */
- if ((loc + 32) > 511)
- return -1;
-
- memcpy(mediasum, buf2 + loc + 13, 32);
- mediasum[32] = '\0';
- md5fnd = 1;
- loc += 45;
- for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
- } else if (!strncmp(buf2 + loc, "SKIPSECTORS = ", 14)) {
- char *errptr;
-
- /* make sure we dont walk off end */
- if ((loc + 14) > 511)
- return -1;
-
- loc = loc + 14;
- for (p=tmpbuf; buf2[loc] != ';' && loc < 512; p++, loc++)
- *p = buf2[loc];
-
- *p = '\0';
-
- *skipsectors = strtol(tmpbuf, &errptr, 10);
- if (errptr && *errptr) {
- return -1;
- } else {
- skipfnd = 1;
- }
-
- for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
- } else if (!strncmp(buf2 + loc, "RHLISOSTATUS=1", 14)) {
- *supported = 1;
- supportedfnd = 1;
- } else if (!strncmp(buf2 + loc, "RHLISOSTATUS=0", 14)) {
- *supported = 0;
- supportedfnd = 1;
- } else {
- loc++;
- }
-
- if ((skipfnd & md5fnd) & supportedfnd)
- break;
- }
-
-
- if (!(skipfnd & md5fnd))
- return -1;
-
- /* get isosize */
- *isosize = (buf[SIZE_OFFSET]*0x1000000+buf[SIZE_OFFSET+1]*0x10000 +
- buf[SIZE_OFFSET+2]*0x100 + buf[SIZE_OFFSET+3]) * 2048LL;
-
- return offset;
-}
-
-/* returns -1 if no checksum encoded in media, 0 if no match, 1 if match */
-/* mediasum is the sum encoded in media, computedsum is one we compute */
-/* both strings must be pre-allocated at least 33 chars in length */
-int checkmd5sum(int isofd, char *mediasum, char *computedsum) {
- int nread;
- int i;
- int appdata_start_offset, appdata_end_offset;
- int nattempt;
- int skipsectors;
- int supported;
- unsigned int bufsize = 32768;
- unsigned char md5sum[16];
- unsigned int len;
- unsigned char *buf;
- long long isosize, offset, pvd_offset, apoff;
- MD5_CTX md5ctx;
-
- if ((pvd_offset = parsepvd(isofd, mediasum, &skipsectors, &isosize, &supported)) < 0)
- return -1;
-
- /* printf("Mediasum = %s\n",mediasum); */
-
- /* rewind, compute md5sum */
- lseek(isofd, 0L, SEEK_SET);
-
- MD5_Init(&md5ctx);
-
- offset = 0;
- apoff = pvd_offset + APPDATA_OFFSET;
-
- buf = malloc(bufsize * sizeof(unsigned char));
- printf("Percent complete: %05.1f%%", (100.0*offset)/(isosize-skipsectors*2048.0));
- fflush(stdout);
- while (offset < isosize - skipsectors*2048) {
- nattempt = MIN(isosize - skipsectors*2048 - offset, bufsize);
-
- /* printf("%lld %lld %lld %d\n", offset, isosize, isosize-SKIPSECTORS*2048, nattempt); */
-
- nread = read(isofd, buf, nattempt);
- if (nread <= 0)
- break;
-
- /* overwrite md5sum we implanted with original data */
- if (offset < apoff && offset+nread >= apoff) {
- appdata_start_offset = apoff - offset;
- appdata_end_offset = MIN(appdata_start_offset+MIN(nread, 512),
- offset + nread - apoff);
- len = appdata_end_offset - appdata_start_offset;
- memset(buf+appdata_start_offset, ' ', len);
- } else if (offset >= apoff && offset+nread < apoff + 512) {
- appdata_start_offset = 0;
- appdata_end_offset = nread;
- len = appdata_end_offset - appdata_start_offset;
- memset(buf+appdata_start_offset, ' ', len);
- } else if (offset < apoff + 512 && offset+nread >= apoff + 512) {
- appdata_start_offset = 0;
- appdata_end_offset = apoff + 512 - offset;
- len = appdata_end_offset - appdata_start_offset;
- memset(buf+appdata_start_offset, ' ', len);
- }
-
- MD5_Update(&md5ctx, buf, nread);
- offset = offset + nread;
-
- printf("\b\b\b\b\b\b%05.1f%%", (100.0*offset)/(isosize-skipsectors*2048.0));
- fflush(stdout);
- }
-
- printf("\b\b\b\b\b\b\n\n", (100.0*offset)/(isosize-skipsectors*2048.0));
-
- sleep(1);
-
- free(buf);
-
- MD5_Final(md5sum, &md5ctx);
-
- *computedsum = '\0';
- for (i=0; i<16; i++) {
- char tmpstr[4];
- snprintf (tmpstr, 4, "%02x", md5sum[i]);
- strcat(computedsum, tmpstr);
- }
-
- /* printf("mediasum, computedsum = %s %s\n", mediasum, computedsum); */
-
- if (strcmp(mediasum, computedsum))
- return 0;
- else
- return 1;
- }
-
-
-#if 0
-static void readCB(void *co, long long pos) {
- struct progressCBdata *data = co;
- static int tick = 0;
- char tickmark[2] = "-";
- char * ticks = "-\\|/";
-
- newtScaleSet(data->scale, pos);
- tick++;
- if (tick > 399) tick = 0;
- *tickmark = ticks[tick / 100];
-
- newtLabelSetText(data->label, tickmark);
- newtRefresh();
-}
-#endif
-
-int doMediaCheck(int isofd, char *mediasum, char *computedsum, long long *isosize, int *supported) {
- int rc;
- int llen;
- int skipsectors;
-
- if (parsepvd(isofd, mediasum, &skipsectors, isosize, supported) < 0) {
- fprintf(stderr, "Unable to read the disc checksum from the "
- "primary volume descriptor. This probably "
- "means the disc was created without adding the "
- "checksum.");
- return -1;
- }
-
- rc = checkmd5sum(isofd, mediasum, computedsum);
-
- return rc;
-}
-
-int mediaCheckFile(char *file) {
- int isofd;
- int rc;
- char *result;
- unsigned char mediasum[33], computedsum[33];
- char tmpstr[256];
- long long isosize;
- int supported;
-
- isofd = open(file, O_RDONLY);
-
- if (isofd < 0) {
- fprintf(stderr, "Unable to find install image %s\n", file);
- return -1;
- }
-
- rc = doMediaCheck(isofd, mediasum, computedsum, &isosize, &supported);
-
- close(isofd);
-
- /* printf("isosize = %lld\n", isosize);
- printf("%s\n%s\n", mediasum, computedsum);*/
-
- fprintf(stderr, "The supported flag value is %d\n", supported);
-
- if ( rc == 0)
- result = "FAIL.\n\nIt is not recommended to use this media.";
- else if (rc > 0)
- result = "PASS.\n\nIt is OK to install from this media.";
- else
- result = "NA.\n\nNo checksum information available, unable to verify media.";
-
- fprintf(stderr, "The media check is complete, the "
- "result is: %s\n", result);
-
- return rc;
-}
-
-int printMD5SUM(char *file) {
- int isofd;
- char mediasum[64];
- char computedsum;
- long long isosize;
- int supported;
- int rc;
- int llen;
- int skipsectors;
-
- isofd = open(file, O_RDONLY);
-
- if (isofd < 0) {
- fprintf(stderr, "%s: Unable to find install image.\n", file);
- exit(1);
- }
-
- if (parsepvd(isofd, mediasum, &skipsectors, &isosize, &supported) < 0) {
- fprintf(stderr, "%s: Could not get pvd data", file);
- exit(1);
- }
-
- close(isofd);
-
- printf("%s: %s\n", file, mediasum);
-}
-
-
+#include "libcheckisomd5.h"
int main(int argc, char **argv) {
int rc;
diff --git a/isomd5sum/implantisomd5.c b/isomd5sum/implantisomd5.c
index 2e127b769..589fb8e49 100644
--- a/isomd5sum/implantisomd5.c
+++ b/isomd5sum/implantisomd5.c
@@ -4,79 +4,10 @@
/* Michael Fulbright msf@redhat.com */
#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
#include <popt.h>
#include "md5.h"
-
-#define APPDATA_OFFSET 883
-#define SIZE_OFFSET 84
-
-/* number of sectors to ignore at end of iso when computing sum */
-#define SKIPSECTORS 15
-
-#define MAX(x, y) ((x > y) ? x : y)
-#define MIN(x, y) ((x < y) ? x : y)
-
-/* finds primary volume descriptor and returns info from it */
-/* mediasum must be a preallocated buffer at least 33 bytes long */
-int parsepvd(int isofd, char *mediasum, long long *isosize) {
- unsigned char buf[2048];
- long long offset;
- unsigned char *p;
-
- if (lseek(isofd, (off_t)(16L * 2048L), SEEK_SET) == -1)
- return ((long long)-1);
-
- offset = (16L * 2048L);
- for (;1;) {
- if (read(isofd, buf, 2048) <= 0)
- return ((long long)-1);
-
- if (buf[0] == 1)
- /* found primary volume descriptor */
- break;
- else if (buf[0] == 255)
- /* hit end and didn't find primary volume descriptor */
- return ((long long)-1);
- offset += 2048L;
- }
-
- /* read out md5sum */
-#if 0
- memcpy(mediasum, buf + APPDATA_OFFSET + 13, 32);
- mediasum[32] = '\0';
-
- for (p=mediasum; *p; p++)
- if (*p != ' ')
- break;
-
- /* if the md5sum was all spaces, we didn't find md5sum */
- if (!*p)
- return -1;
-#endif
-
- /* get isosize */
- *isosize = (buf[SIZE_OFFSET]*0x1000000+buf[SIZE_OFFSET+1]*0x10000 +
- buf[SIZE_OFFSET+2]*0x100 + buf[SIZE_OFFSET+3]) * 2048LL;
-
- return offset;
-}
-
-
-unsigned int writeAppData(unsigned char *appdata, char *valstr, unsigned int loc) {
- if (loc + strlen(valstr) > 511) {
- printf("Attempted to write too much appdata, exiting...\n");
- exit(-1);
- }
-
- memcpy(appdata + loc, valstr, strlen(valstr));
-
- return loc+strlen(valstr);
-}
+#include "libimplantisomd5.h"
static void usage(void) {
@@ -86,26 +17,13 @@ static void usage(void) {
int main(int argc, char **argv) {
- int i;
int rc;
- int isofd;
- int nread;
- int dirty;
- int pvd_offset;
+ char *errstr;
+ const char **args;
+
int forceit=0;
int supported=0;
int help=0;
- long long isosize, total;
- const char **args;
- unsigned char md5sum[16];
- unsigned int loc;
- unsigned char *fname;
- unsigned char buf[2048];
- unsigned char orig_appdata[512];
- unsigned char new_appdata[512];
- unsigned char mediasum[33], computedsum[33];
- char md5str[40];
- MD5_CTX md5ctx;
poptContext optCon;
struct poptOption options[] = {
@@ -132,108 +50,7 @@ int main(int argc, char **argv) {
if (!args || !args[0] || !args[0][0])
usage();
- fname = args[0];
-
- isofd = open(fname, O_RDWR);
-
- if (isofd < 0) {
- fprintf(stderr, "Error - Unable to open file %s\n\n", fname);
- exit(1);
- }
-
- pvd_offset = parsepvd(isofd, mediasum, &isosize);
- if (pvd_offset < 0) {
- fprintf(stderr, "Could not find primary volumne!\n\n");
- exit(1);
- }
-
- lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET);
- nread = read(isofd, orig_appdata, 512);
-
- if (!forceit) {
- dirty = 0;
- for (i=0; i < 512; i++)
- if (orig_appdata[i] != ' ')
- dirty = 1;
-
- if (dirty) {
- fprintf(stderr, "Application data has been used - not implanting md5sum!\n");
- exit(1);
- }
- } else {
- /* write out blanks to erase old app data */
- lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET);
- memset(new_appdata, ' ', 512);
- i = write(isofd, new_appdata, 512);
- if (i<0) {
- printf("write failed %d\n", i);
- perror("");
- }
- }
-
- /* now do md5sum */
- lseek(isofd, 0L, SEEK_SET);
-
- MD5_Init(&md5ctx);
-
- total = 0;
- /* read up to 15 sectors from end, due to problems reading last few */
- /* sectors on burned CDs */
- while (total < isosize - SKIPSECTORS*2048) {
- nread = read(isofd, buf, 2048);
- if (nread <= 0)
- break;
-
- MD5_Update(&md5ctx, buf, nread);
- total = total + nread;
- }
-
- MD5_Final(md5sum, &md5ctx);
-
- *md5str = '\0';
- for (i=0; i<16; i++) {
- char tmpstr[4];
- snprintf (tmpstr, 4, "%02x", md5sum[i]);
- strcat(md5str, tmpstr);
- }
-
- printf("Inserting md5sum into iso image...\n");
- printf("md5 = %s\n", md5str);
- /* memcpy(new_appdata, orig_appdata, 512); */
- memset(new_appdata, ' ', 512);
-
- loc = 0;
- loc = writeAppData(new_appdata, "ISO MD5SUM = ", loc);
- loc = writeAppData(new_appdata, md5str, loc);
- loc = writeAppData(new_appdata, ";", loc);
- snprintf(buf, sizeof(buf), "SKIPSECTORS = %d", SKIPSECTORS);
- loc = writeAppData(new_appdata, buf, loc);
- loc = writeAppData(new_appdata, ";", loc);
-
- if (supported) {
- printf("Setting supported flag to 1\n");
- loc = writeAppData(new_appdata, "RHLISOSTATUS=1", loc);
- } else {
- printf("Setting supported flag to 0\n");
- loc = writeAppData(new_appdata, "RHLISOSTATUS=0", loc);
- }
-
- loc = writeAppData(new_appdata, ";", loc);
-
- loc = writeAppData(new_appdata, "THIS IS NOT THE SAME AS RUNNING MD5SUM ON THIS ISO!!", loc);
-
- i = lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET);
- if (i<0)
- printf("seek failed\n");
-
- i = write(isofd, new_appdata, 512);
- if (i<0) {
- printf("write failed %d\n", i);
- perror("");
- }
-
- close(isofd);
-
- printf("Done!\n");
- exit(0);
+ rc = implantISOFile((char *)args[0], supported, forceit, errstr);
+ if (rc)
+ fprintf(stderr, errstr);
}
diff --git a/isomd5sum/libcheckisomd5.c b/isomd5sum/libcheckisomd5.c
new file mode 100644
index 000000000..a13dc13a4
--- /dev/null
+++ b/isomd5sum/libcheckisomd5.c
@@ -0,0 +1,307 @@
+/* Copyright 2001 Red Hat, Inc. */
+/* Michael Fulbright msf@redhat.com */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include "md5.h"
+#include "libcheckisomd5.h"
+
+#define APPDATA_OFFSET 883
+#define SIZE_OFFSET 84
+
+#define MAX(x, y) ((x > y) ? x : y)
+#define MIN(x, y) ((x < y) ? x : y)
+
+/* finds primary volume descriptor and returns info from it */
+/* mediasum must be a preallocated buffer at least 33 bytes long */
+int parsepvd(int isofd, char *mediasum, int *skipsectors, long long *isosize, int *supported) {
+ unsigned char buf[2048];
+ unsigned char buf2[512];
+ unsigned char tmpbuf[512];
+ int skipfnd, md5fnd, supportedfnd;
+ unsigned int loc;
+ long long offset;
+ unsigned char *p;
+
+ *supported = 0;
+
+ if (lseek(isofd, (off_t)(16L * 2048L), SEEK_SET) == -1)
+ return ((long long)-1);
+
+ offset = (16L * 2048L);
+ for (;1;) {
+ if (read(isofd, buf, 2048) <=0)
+ return ((long long)-1);
+
+ if (buf[0] == 1)
+ /* found primary volume descriptor */
+ break;
+ else if (buf[0] == 255)
+ /* hit end and didn't find primary volume descriptor */
+ return ((long long)-1);
+ offset += 2048L;
+ }
+
+ /* read out md5sum */
+ memcpy(buf2, buf + APPDATA_OFFSET, 512);
+ buf2[511] = '\0';
+
+ md5fnd = 0;
+ skipfnd = 0;
+ supportedfnd = 0;
+ loc = 0;
+ while (loc < 512) {
+ if (!strncmp(buf2 + loc, "ISO MD5SUM = ", 13)) {
+
+ /* make sure we dont walk off end */
+ if ((loc + 32) > 511)
+ return -1;
+
+ memcpy(mediasum, buf2 + loc + 13, 32);
+ mediasum[32] = '\0';
+ md5fnd = 1;
+ loc += 45;
+ for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
+ } else if (!strncmp(buf2 + loc, "SKIPSECTORS = ", 14)) {
+ char *errptr;
+
+ /* make sure we dont walk off end */
+ if ((loc + 14) > 511)
+ return -1;
+
+ loc = loc + 14;
+ for (p=tmpbuf; buf2[loc] != ';' && loc < 512; p++, loc++)
+ *p = buf2[loc];
+
+ *p = '\0';
+
+ *skipsectors = strtol(tmpbuf, &errptr, 10);
+ if (errptr && *errptr) {
+ return -1;
+ } else {
+ skipfnd = 1;
+ }
+
+ for (p=buf2+loc; *p != ';' && loc < 512; p++, loc++);
+ } else if (!strncmp(buf2 + loc, "RHLISOSTATUS=1", 14)) {
+ *supported = 1;
+ supportedfnd = 1;
+ } else if (!strncmp(buf2 + loc, "RHLISOSTATUS=0", 14)) {
+ *supported = 0;
+ supportedfnd = 1;
+ } else {
+ loc++;
+ }
+
+ if ((skipfnd & md5fnd) & supportedfnd)
+ break;
+ }
+
+
+ if (!(skipfnd & md5fnd))
+ return -1;
+
+ /* get isosize */
+ *isosize = (buf[SIZE_OFFSET]*0x1000000+buf[SIZE_OFFSET+1]*0x10000 +
+ buf[SIZE_OFFSET+2]*0x100 + buf[SIZE_OFFSET+3]) * 2048LL;
+
+ return offset;
+}
+
+/* returns -1 if no checksum encoded in media, 0 if no match, 1 if match */
+/* mediasum is the sum encoded in media, computedsum is one we compute */
+/* both strings must be pre-allocated at least 33 chars in length */
+int checkmd5sum(int isofd, char *mediasum, char *computedsum) {
+ int nread;
+ int i;
+ int appdata_start_offset, appdata_end_offset;
+ int nattempt;
+ int skipsectors;
+ int supported;
+ unsigned int bufsize = 32768;
+ unsigned char md5sum[16];
+ unsigned int len;
+ unsigned char *buf;
+ long long isosize, offset, pvd_offset, apoff;
+ MD5_CTX md5ctx;
+
+ if ((pvd_offset = parsepvd(isofd, mediasum, &skipsectors, &isosize, &supported)) < 0)
+ return -1;
+
+ /* printf("Mediasum = %s\n",mediasum); */
+
+ /* rewind, compute md5sum */
+ lseek(isofd, 0L, SEEK_SET);
+
+ MD5_Init(&md5ctx);
+
+ offset = 0;
+ apoff = pvd_offset + APPDATA_OFFSET;
+
+ buf = malloc(bufsize * sizeof(unsigned char));
+ printf("Percent complete: %05.1f%%", (100.0*offset)/(isosize-skipsectors*2048.0));
+ fflush(stdout);
+ while (offset < isosize - skipsectors*2048) {
+ nattempt = MIN(isosize - skipsectors*2048 - offset, bufsize);
+
+ /* printf("%lld %lld %lld %d\n", offset, isosize, isosize-SKIPSECTORS*2048, nattempt); */
+
+ nread = read(isofd, buf, nattempt);
+ if (nread <= 0)
+ break;
+
+ /* overwrite md5sum we implanted with original data */
+ if (offset < apoff && offset+nread >= apoff) {
+ appdata_start_offset = apoff - offset;
+ appdata_end_offset = MIN(appdata_start_offset+MIN(nread, 512),
+ offset + nread - apoff);
+ len = appdata_end_offset - appdata_start_offset;
+ memset(buf+appdata_start_offset, ' ', len);
+ } else if (offset >= apoff && offset+nread < apoff + 512) {
+ appdata_start_offset = 0;
+ appdata_end_offset = nread;
+ len = appdata_end_offset - appdata_start_offset;
+ memset(buf+appdata_start_offset, ' ', len);
+ } else if (offset < apoff + 512 && offset+nread >= apoff + 512) {
+ appdata_start_offset = 0;
+ appdata_end_offset = apoff + 512 - offset;
+ len = appdata_end_offset - appdata_start_offset;
+ memset(buf+appdata_start_offset, ' ', len);
+ }
+
+ MD5_Update(&md5ctx, buf, nread);
+ offset = offset + nread;
+
+ printf("\b\b\b\b\b\b%05.1f%%", (100.0*offset)/(isosize-skipsectors*2048.0));
+ fflush(stdout);
+ }
+
+ printf("\b\b\b\b\b\b\n\n", (100.0*offset)/(isosize-skipsectors*2048.0));
+
+ sleep(1);
+
+ free(buf);
+
+ MD5_Final(md5sum, &md5ctx);
+
+ *computedsum = '\0';
+ for (i=0; i<16; i++) {
+ char tmpstr[4];
+ snprintf (tmpstr, 4, "%02x", md5sum[i]);
+ strcat(computedsum, tmpstr);
+ }
+
+ /* printf("mediasum, computedsum = %s %s\n", mediasum, computedsum); */
+
+ if (strcmp(mediasum, computedsum))
+ return 0;
+ else
+ return 1;
+ }
+
+
+#if 0
+static void readCB(void *co, long long pos) {
+ struct progressCBdata *data = co;
+ static int tick = 0;
+ char tickmark[2] = "-";
+ char * ticks = "-\\|/";
+
+ newtScaleSet(data->scale, pos);
+ tick++;
+ if (tick > 399) tick = 0;
+ *tickmark = ticks[tick / 100];
+
+ newtLabelSetText(data->label, tickmark);
+ newtRefresh();
+}
+#endif
+
+int doMediaCheck(int isofd, char *mediasum, char *computedsum, long long *isosize, int *supported) {
+ int rc;
+ int llen;
+ int skipsectors;
+
+ if (parsepvd(isofd, mediasum, &skipsectors, isosize, supported) < 0) {
+ fprintf(stderr, "Unable to read the disc checksum from the "
+ "primary volume descriptor. This probably "
+ "means the disc was created without adding the "
+ "checksum.");
+ return -1;
+ }
+
+ rc = checkmd5sum(isofd, mediasum, computedsum);
+
+ return rc;
+}
+
+int mediaCheckFile(char *file) {
+ int isofd;
+ int rc;
+ char *result;
+ unsigned char mediasum[33], computedsum[33];
+ char tmpstr[256];
+ long long isosize;
+ int supported;
+
+ isofd = open(file, O_RDONLY);
+
+ if (isofd < 0) {
+ fprintf(stderr, "Unable to find install image %s\n", file);
+ return -1;
+ }
+
+ rc = doMediaCheck(isofd, mediasum, computedsum, &isosize, &supported);
+
+ close(isofd);
+
+ /* printf("isosize = %lld\n", isosize);
+ printf("%s\n%s\n", mediasum, computedsum);*/
+
+ fprintf(stderr, "The supported flag value is %d\n", supported);
+
+ if ( rc == 0)
+ result = "FAIL.\n\nIt is not recommended to use this media.";
+ else if (rc > 0)
+ result = "PASS.\n\nIt is OK to install from this media.";
+ else
+ result = "NA.\n\nNo checksum information available, unable to verify media.";
+
+ fprintf(stderr, "The media check is complete, the "
+ "result is: %s\n", result);
+
+ return rc;
+}
+
+int printMD5SUM(char *file) {
+ int isofd;
+ char mediasum[64];
+ char computedsum;
+ long long isosize;
+ int supported;
+ int rc;
+ int llen;
+ int skipsectors;
+
+ isofd = open(file, O_RDONLY);
+
+ if (isofd < 0) {
+ fprintf(stderr, "%s: Unable to find install image.\n", file);
+ exit(1);
+ }
+
+ if (parsepvd(isofd, mediasum, &skipsectors, &isosize, &supported) < 0) {
+ fprintf(stderr, "%s: Could not get pvd data", file);
+ exit(1);
+ }
+
+ close(isofd);
+
+ printf("%s: %s\n", file, mediasum);
+}
diff --git a/isomd5sum/libcheckisomd5.h b/isomd5sum/libcheckisomd5.h
new file mode 100644
index 000000000..0ce7f0bd5
--- /dev/null
+++ b/isomd5sum/libcheckisomd5.h
@@ -0,0 +1,6 @@
+#ifndef __LIBCHECKISOMD5_H__
+#define __LIBCHECKISOMD5_H__
+
+int mediaCheckFile(char *iso);
+
+#endif
diff --git a/isomd5sum/libimplantisomd5.c b/isomd5sum/libimplantisomd5.c
new file mode 100644
index 000000000..55bb73f2d
--- /dev/null
+++ b/isomd5sum/libimplantisomd5.c
@@ -0,0 +1,204 @@
+/* Copyright 2001 Red Hat, Inc. */
+/* Michael Fulbright msf@redhat.com */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "md5.h"
+#include "libimplantisomd5.h"
+
+#define APPDATA_OFFSET 883
+#define SIZE_OFFSET 84
+
+/* number of sectors to ignore at end of iso when computing sum */
+#define SKIPSECTORS 15
+
+#define MAX(x, y) ((x > y) ? x : y)
+#define MIN(x, y) ((x < y) ? x : y)
+
+/* finds primary volume descriptor and returns info from it */
+/* mediasum must be a preallocated buffer at least 33 bytes long */
+int parsepvd(int isofd, char *mediasum, long long *isosize) {
+ unsigned char buf[2048];
+ long long offset;
+ unsigned char *p;
+
+ if (lseek(isofd, (off_t)(16L * 2048L), SEEK_SET) == -1)
+ return ((long long)-1);
+
+ offset = (16L * 2048L);
+ for (;1;) {
+ if (read(isofd, buf, 2048) <= 0)
+ return ((long long)-1);
+
+ if (buf[0] == 1)
+ /* found primary volume descriptor */
+ break;
+ else if (buf[0] == 255)
+ /* hit end and didn't find primary volume descriptor */
+ return ((long long)-1);
+ offset += 2048L;
+ }
+
+ /* read out md5sum */
+#if 0
+ memcpy(mediasum, buf + APPDATA_OFFSET + 13, 32);
+ mediasum[32] = '\0';
+
+ for (p=mediasum; *p; p++)
+ if (*p != ' ')
+ break;
+
+ /* if the md5sum was all spaces, we didn't find md5sum */
+ if (!*p)
+ return -1;
+#endif
+
+ /* get isosize */
+ *isosize = (buf[SIZE_OFFSET]*0x1000000+buf[SIZE_OFFSET+1]*0x10000 +
+ buf[SIZE_OFFSET+2]*0x100 + buf[SIZE_OFFSET+3]) * 2048LL;
+
+ return offset;
+}
+
+
+unsigned int writeAppData(unsigned char *appdata, char *valstr, unsigned int loc) {
+ if (loc + strlen(valstr) > 511) {
+ printf("Attempted to write too much appdata, exiting...\n");
+ exit(-1);
+ }
+
+ memcpy(appdata + loc, valstr, strlen(valstr));
+
+ return loc+strlen(valstr);
+}
+
+
+static void usage(void) {
+ fprintf(stderr, "implantisomd5: implantisomd5 [--force] [--supported] <isofilename>\n");
+ exit(1);
+}
+
+
+int implantISOFile(char *fname, int supported, int forceit, char *errstr) {
+ int i;
+ int rc;
+ int isofd;
+ int nread;
+ int dirty;
+ int pvd_offset;
+ long long isosize, total;
+ unsigned char md5sum[16];
+ unsigned int loc;
+ unsigned char buf[2048];
+ unsigned char orig_appdata[512];
+ unsigned char new_appdata[512];
+ unsigned char mediasum[33], computedsum[33];
+ char md5str[40];
+ MD5_CTX md5ctx;
+
+ isofd = open(fname, O_RDWR);
+
+ if (isofd < 0) {
+ errstr = "Error - Unable to open file %s\n\n";
+ return -1;
+ }
+
+ pvd_offset = parsepvd(isofd, mediasum, &isosize);
+ if (pvd_offset < 0) {
+ errstr = "Could not find primary volumne!\n\n";
+ return -1;
+ }
+
+ lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET);
+ nread = read(isofd, orig_appdata, 512);
+
+ if (!forceit) {
+ dirty = 0;
+ for (i=0; i < 512; i++)
+ if (orig_appdata[i] != ' ')
+ dirty = 1;
+
+ if (dirty) {
+ errstr = "Application data has been used - not implanting md5sum!\n";
+ return -1;
+ }
+ } else {
+ /* write out blanks to erase old app data */
+ lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET);
+ memset(new_appdata, ' ', 512);
+ i = write(isofd, new_appdata, 512);
+ if (i<0) {
+ printf("write failed %d\n", i);
+ perror("");
+ }
+ }
+
+ /* now do md5sum */
+ lseek(isofd, 0L, SEEK_SET);
+
+ MD5_Init(&md5ctx);
+
+ total = 0;
+ /* read up to 15 sectors from end, due to problems reading last few */
+ /* sectors on burned CDs */
+ while (total < isosize - SKIPSECTORS*2048) {
+ nread = read(isofd, buf, 2048);
+ if (nread <= 0)
+ break;
+
+ MD5_Update(&md5ctx, buf, nread);
+ total = total + nread;
+ }
+
+ MD5_Final(md5sum, &md5ctx);
+
+ *md5str = '\0';
+ for (i=0; i<16; i++) {
+ char tmpstr[4];
+ snprintf (tmpstr, 4, "%02x", md5sum[i]);
+ strcat(md5str, tmpstr);
+ }
+
+ printf("Inserting md5sum into iso image...\n");
+ printf("md5 = %s\n", md5str);
+ /* memcpy(new_appdata, orig_appdata, 512); */
+ memset(new_appdata, ' ', 512);
+
+ loc = 0;
+ loc = writeAppData(new_appdata, "ISO MD5SUM = ", loc);
+ loc = writeAppData(new_appdata, md5str, loc);
+ loc = writeAppData(new_appdata, ";", loc);
+ snprintf(buf, sizeof(buf), "SKIPSECTORS = %d", SKIPSECTORS);
+ loc = writeAppData(new_appdata, buf, loc);
+ loc = writeAppData(new_appdata, ";", loc);
+
+ if (supported) {
+ printf("Setting supported flag to 1\n");
+ loc = writeAppData(new_appdata, "RHLISOSTATUS=1", loc);
+ } else {
+ printf("Setting supported flag to 0\n");
+ loc = writeAppData(new_appdata, "RHLISOSTATUS=0", loc);
+ }
+
+ loc = writeAppData(new_appdata, ";", loc);
+
+ loc = writeAppData(new_appdata, "THIS IS NOT THE SAME AS RUNNING MD5SUM ON THIS ISO!!", loc);
+
+ i = lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET);
+ if (i<0)
+ printf("seek failed\n");
+
+ i = write(isofd, new_appdata, 512);
+ if (i<0) {
+ printf("write failed %d\n", i);
+ perror("");
+ }
+
+ close(isofd);
+
+ return 0;
+}
diff --git a/isomd5sum/libimplantisomd5.h b/isomd5sum/libimplantisomd5.h
new file mode 100644
index 000000000..f5a983297
--- /dev/null
+++ b/isomd5sum/libimplantisomd5.h
@@ -0,0 +1,5 @@
+#ifndef __LIBIMPLANTISOMD5_H__
+#define __LIBIMPLANTISOMD5_H__
+int implantISOFile(char *iso, int supported, int forceit, char *errstr);
+#endif
+
diff --git a/isomd5sum/md5.c b/isomd5sum/md5.c
index fe032ebba..6f0e4ff6f 100644
--- a/isomd5sum/md5.c
+++ b/isomd5sum/md5.c
@@ -21,6 +21,8 @@
#include <string.h>
#include "md5.h"
+void MD5_Transform(uint32 *buf, uint32 const *in);
+
#ifndef HIGHFIRST
#define byteReverse(buf, len) /* Nothing */
#else
generated by cgit (git 2.34.1) at 2024-11-14 13:21:23 +0000