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backfire: tools/firmware-utils: add size check to the mkplanexfw tool (backport of 21174)

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Also pad the image to a 64K boundary.


git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@21229 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2010-04-28 10:46:33 +00:00
parent 2aae7b6746
commit 3bed6fa4d4
1 changed files with 11 additions and 4 deletions
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15
tools/firmware-utils/src/mkplanexfw.c
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@ -40,6 +40,7 @@ struct board_info {
char *id; char *id;
uint32_t seed; uint32_t seed;
uint8_t unk[2]; uint8_t unk[2];
uint32_t datalen;
}; };
/* /*
@ -58,10 +59,12 @@ static struct board_info boards[] = {
.id = "MZK-W04NU", .id = "MZK-W04NU",
.seed = 2, .seed = 2,
.unk = {0x04, 0x08}, .unk = {0x04, 0x08},
.datalen = 0x770000,
}, { }, {
.id = "MZK-W300NH", .id = "MZK-W300NH",
.seed = 4, .seed = 4,
.unk = {0x00, 0x00}, .unk = {0x00, 0x00},
.datalen = 0x770000,
}, { }, {
/* terminating entry */ /* terminating entry */
} }
@ -189,9 +192,13 @@ int main(int argc, char *argv[])
goto err; goto err;
} }
buflen = (st.st_size + 3) & ~3; if (st.st_size > board->datalen) {
buflen += sizeof(*hdr); ERR("file '%s' is too big - max size: 0x%08X (exceeds %lu bytes)\n",
ifname, board->datalen, st.st_size - board->datalen);
goto err;
}
buflen = board->datalen + 0x10000;
buf = malloc(buflen); buf = malloc(buflen);
if (!buf) { if (!buf) {
ERR("no memory for buffer\n"); ERR("no memory for buffer\n");
@ -201,7 +208,7 @@ int main(int argc, char *argv[])
memset(buf, 0xff, buflen); memset(buf, 0xff, buflen);
hdr = (struct planex_hdr *)buf; hdr = (struct planex_hdr *)buf;
hdr->datalen = HOST_TO_BE32(buflen - sizeof(*hdr)); hdr->datalen = HOST_TO_BE32(board->datalen);
hdr->unk1[0] = board->unk[0]; hdr->unk1[0] = board->unk[0];
hdr->unk1[1] = board->unk[1]; hdr->unk1[1] = board->unk[1];
@ -223,7 +230,7 @@ int main(int argc, char *argv[])
seed = HOST_TO_BE32(board->seed); seed = HOST_TO_BE32(board->seed);
sha1_starts(&ctx); sha1_starts(&ctx);
sha1_update(&ctx, (uchar *) &seed, sizeof(seed)); sha1_update(&ctx, (uchar *) &seed, sizeof(seed));
sha1_update(&ctx, buf + sizeof(*hdr), buflen - sizeof(*hdr)); sha1_update(&ctx, buf + sizeof(*hdr), board->datalen);
sha1_finish(&ctx, hdr->sha1sum); sha1_finish(&ctx, hdr->sha1sum);
outfile = fopen(ofname, "w"); outfile = fopen(ofname, "w");