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-rw-r--r--Android.mk2
-rw-r--r--CleanSpec.mk1
-rw-r--r--applypatch/applypatch.c27
-rw-r--r--bootloader.cpp43
-rw-r--r--common.h19
-rw-r--r--install.cpp100
-rw-r--r--minzip/Zip.c6
-rw-r--r--roots.cpp140
-rw-r--r--verifier.cpp102
-rw-r--r--verifier.h2
-rw-r--r--verifier_test.cpp11
11 files changed, 194 insertions, 259 deletions
diff --git a/Android.mk b/Android.mk
index f4ecdb5dd..35151ee70 100644
--- a/Android.mk
+++ b/Android.mk
@@ -32,6 +32,7 @@ LOCAL_MODULE := recovery
LOCAL_FORCE_STATIC_EXECUTABLE := true
RECOVERY_API_VERSION := 3
+RECOVERY_FSTAB_VERSION := 2
LOCAL_CFLAGS += -DRECOVERY_API_VERSION=$(RECOVERY_API_VERSION)
LOCAL_STATIC_LIBRARIES := \
@@ -45,6 +46,7 @@ LOCAL_STATIC_LIBRARIES := \
libminui \
libpixelflinger_static \
libpng \
+ libfs_mgr \
libcutils \
libselinux \
libstdc++ \
diff --git a/CleanSpec.mk b/CleanSpec.mk
index b84e1b65e..ecf89ae75 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -47,3 +47,4 @@
# ************************************************
# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
# ************************************************
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/EXECUTABLES/recovery_intermediates)
diff --git a/applypatch/applypatch.c b/applypatch/applypatch.c
index 7b8a010e3..69f8633ab 100644
--- a/applypatch/applypatch.c
+++ b/applypatch/applypatch.c
@@ -585,6 +585,14 @@ int CacheSizeCheck(size_t bytes) {
}
}
+static void print_short_sha1(const uint8_t sha1[SHA_DIGEST_SIZE]) {
+ int i;
+ const char* hex = "0123456789abcdef";
+ for (i = 0; i < 4; ++i) {
+ putchar(hex[(sha1[i]>>4) & 0xf]);
+ putchar(hex[sha1[i] & 0xf]);
+ }
+}
// This function applies binary patches to files in a way that is safe
// (the original file is not touched until we have the desired
@@ -620,7 +628,7 @@ int applypatch(const char* source_filename,
char** const patch_sha1_str,
Value** patch_data,
Value* bonus_data) {
- printf("\napplying patch to %s\n", source_filename);
+ printf("patch %s: ", source_filename);
if (target_filename[0] == '-' &&
target_filename[1] == '\0') {
@@ -646,8 +654,9 @@ int applypatch(const char* source_filename,
if (memcmp(source_file.sha1, target_sha1, SHA_DIGEST_SIZE) == 0) {
// The early-exit case: the patch was already applied, this file
// has the desired hash, nothing for us to do.
- printf("\"%s\" is already target; no patch needed\n",
- target_filename);
+ printf("already ");
+ print_short_sha1(target_sha1);
+ putchar('\n');
free(source_file.data);
return 0;
}
@@ -769,8 +778,10 @@ static int GenerateTarget(FileContents* source_file,
enough_space =
(free_space > (256 << 10)) && // 256k (two-block) minimum
(free_space > (target_size * 3 / 2)); // 50% margin of error
- printf("target %ld bytes; free space %ld bytes; retry %d; enough %d\n",
- (long)target_size, (long)free_space, retry, enough_space);
+ if (!enough_space) {
+ printf("target %ld bytes; free space %ld bytes; retry %d; enough %d\n",
+ (long)target_size, (long)free_space, retry, enough_space);
+ }
}
if (!enough_space) {
@@ -805,7 +816,7 @@ static int GenerateTarget(FileContents* source_file,
unlink(source_filename);
size_t free_space = FreeSpaceForFile(target_fs);
- printf("(now %ld bytes free for target)\n", (long)free_space);
+ printf("(now %ld bytes free for target) ", (long)free_space);
}
}
@@ -901,6 +912,10 @@ static int GenerateTarget(FileContents* source_file,
if (memcmp(current_target_sha1, target_sha1, SHA_DIGEST_SIZE) != 0) {
printf("patch did not produce expected sha1\n");
return 1;
+ } else {
+ printf("now ");
+ print_short_sha1(target_sha1);
+ putchar('\n');
}
if (output < 0) {
diff --git a/bootloader.cpp b/bootloader.cpp
index baaddc55f..600d238f5 100644
--- a/bootloader.cpp
+++ b/bootloader.cpp
@@ -14,6 +14,7 @@
* limitations under the License.
*/
+#include <fs_mgr.h>
#include "bootloader.h"
#include "common.h"
#include "mtdutils/mtdutils.h"
@@ -71,22 +72,22 @@ static int get_bootloader_message_mtd(struct bootloader_message *out,
const Volume* v) {
size_t write_size;
mtd_scan_partitions();
- const MtdPartition *part = mtd_find_partition_by_name(v->device);
+ const MtdPartition *part = mtd_find_partition_by_name(v->blk_device);
if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) {
- LOGE("Can't find %s\n", v->device);
+ LOGE("Can't find %s\n", v->blk_device);
return -1;
}
MtdReadContext *read = mtd_read_partition(part);
if (read == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't open %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
const ssize_t size = write_size * MISC_PAGES;
char data[size];
ssize_t r = mtd_read_data(read, data, size);
- if (r != size) LOGE("Can't read %s\n(%s)\n", v->device, strerror(errno));
+ if (r != size) LOGE("Can't read %s\n(%s)\n", v->blk_device, strerror(errno));
mtd_read_close(read);
if (r != size) return -1;
@@ -97,22 +98,22 @@ static int set_bootloader_message_mtd(const struct bootloader_message *in,
const Volume* v) {
size_t write_size;
mtd_scan_partitions();
- const MtdPartition *part = mtd_find_partition_by_name(v->device);
+ const MtdPartition *part = mtd_find_partition_by_name(v->blk_device);
if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) {
- LOGE("Can't find %s\n", v->device);
+ LOGE("Can't find %s\n", v->blk_device);
return -1;
}
MtdReadContext *read = mtd_read_partition(part);
if (read == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't open %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
ssize_t size = write_size * MISC_PAGES;
char data[size];
ssize_t r = mtd_read_data(read, data, size);
- if (r != size) LOGE("Can't read %s\n(%s)\n", v->device, strerror(errno));
+ if (r != size) LOGE("Can't read %s\n(%s)\n", v->blk_device, strerror(errno));
mtd_read_close(read);
if (r != size) return -1;
@@ -120,16 +121,16 @@ static int set_bootloader_message_mtd(const struct bootloader_message *in,
MtdWriteContext *write = mtd_write_partition(part);
if (write == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't open %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
if (mtd_write_data(write, data, size) != size) {
- LOGE("Can't write %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't write %s\n(%s)\n", v->blk_device, strerror(errno));
mtd_write_close(write);
return -1;
}
if (mtd_write_close(write)) {
- LOGE("Can't finish %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't finish %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
@@ -161,20 +162,20 @@ static void wait_for_device(const char* fn) {
static int get_bootloader_message_block(struct bootloader_message *out,
const Volume* v) {
- wait_for_device(v->device);
- FILE* f = fopen(v->device, "rb");
+ wait_for_device(v->blk_device);
+ FILE* f = fopen(v->blk_device, "rb");
if (f == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't open %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
struct bootloader_message temp;
int count = fread(&temp, sizeof(temp), 1, f);
if (count != 1) {
- LOGE("Failed reading %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Failed reading %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
if (fclose(f) != 0) {
- LOGE("Failed closing %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Failed closing %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
memcpy(out, &temp, sizeof(temp));
@@ -183,19 +184,19 @@ static int get_bootloader_message_block(struct bootloader_message *out,
static int set_bootloader_message_block(const struct bootloader_message *in,
const Volume* v) {
- wait_for_device(v->device);
- FILE* f = fopen(v->device, "wb");
+ wait_for_device(v->blk_device);
+ FILE* f = fopen(v->blk_device, "wb");
if (f == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't open %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
int count = fwrite(in, sizeof(*in), 1, f);
if (count != 1) {
- LOGE("Failed writing %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Failed writing %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
if (fclose(f) != 0) {
- LOGE("Failed closing %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Failed closing %s\n(%s)\n", v->blk_device, strerror(errno));
return -1;
}
return 0;
diff --git a/common.h b/common.h
index a1168cdbb..3587a31f2 100644
--- a/common.h
+++ b/common.h
@@ -39,24 +39,7 @@ extern "C" {
#define STRINGIFY(x) #x
#define EXPAND(x) STRINGIFY(x)
-typedef struct {
- const char* mount_point; // eg. "/cache". must live in the root directory.
-
- const char* fs_type; // "yaffs2" or "ext4" or "vfat"
-
- const char* device; // MTD partition name if fs_type == "yaffs"
- // block device if fs_type == "ext4" or "vfat"
-
- const char* device2; // alternative device to try if fs_type
- // == "ext4" or "vfat" and mounting
- // 'device' fails
-
- long long length; // (ext4 partition only) when
- // formatting, size to use for the
- // partition. 0 or negative number
- // means to format all but the last
- // (that much).
-} Volume;
+typedef struct fstab_rec Volume;
// fopen a file, mounting volumes and making parent dirs as necessary.
FILE* fopen_path(const char *path, const char *mode);
diff --git a/install.cpp b/install.cpp
index b8f478130..0f3298f1d 100644
--- a/install.cpp
+++ b/install.cpp
@@ -174,106 +174,6 @@ try_update_binary(const char *path, ZipArchive *zip, int* wipe_cache) {
return INSTALL_SUCCESS;
}
-// Reads a file containing one or more public keys as produced by
-// DumpPublicKey: this is an RSAPublicKey struct as it would appear
-// as a C source literal, eg:
-//
-// "{64,0xc926ad21,{1795090719,...,-695002876},{-857949815,...,1175080310}}"
-//
-// For key versions newer than the original 2048-bit e=3 keys
-// supported by Android, the string is preceded by a version
-// identifier, eg:
-//
-// "v2 {64,0xc926ad21,{1795090719,...,-695002876},{-857949815,...,1175080310}}"
-//
-// (Note that the braces and commas in this example are actual
-// characters the parser expects to find in the file; the ellipses
-// indicate more numbers omitted from this example.)
-//
-// The file may contain multiple keys in this format, separated by
-// commas. The last key must not be followed by a comma.
-//
-// Returns NULL if the file failed to parse, or if it contain zero keys.
-static RSAPublicKey*
-load_keys(const char* filename, int* numKeys) {
- RSAPublicKey* out = NULL;
- *numKeys = 0;
-
- FILE* f = fopen(filename, "r");
- if (f == NULL) {
- LOGE("opening %s: %s\n", filename, strerror(errno));
- goto exit;
- }
-
- {
- int i;
- bool done = false;
- while (!done) {
- ++*numKeys;
- out = (RSAPublicKey*)realloc(out, *numKeys * sizeof(RSAPublicKey));
- RSAPublicKey* key = out + (*numKeys - 1);
-
- char start_char;
- if (fscanf(f, " %c", &start_char) != 1) goto exit;
- if (start_char == '{') {
- // a version 1 key has no version specifier.
- key->exponent = 3;
- } else if (start_char == 'v') {
- int version;
- if (fscanf(f, "%d {", &version) != 1) goto exit;
- if (version == 2) {
- key->exponent = 65537;
- } else {
- goto exit;
- }
- }
-
- if (fscanf(f, " %i , 0x%x , { %u",
- &(key->len), &(key->n0inv), &(key->n[0])) != 3) {
- goto exit;
- }
- if (key->len != RSANUMWORDS) {
- LOGE("key length (%d) does not match expected size\n", key->len);
- goto exit;
- }
- for (i = 1; i < key->len; ++i) {
- if (fscanf(f, " , %u", &(key->n[i])) != 1) goto exit;
- }
- if (fscanf(f, " } , { %u", &(key->rr[0])) != 1) goto exit;
- for (i = 1; i < key->len; ++i) {
- if (fscanf(f, " , %u", &(key->rr[i])) != 1) goto exit;
- }
- fscanf(f, " } } ");
-
- // if the line ends in a comma, this file has more keys.
- switch (fgetc(f)) {
- case ',':
- // more keys to come.
- break;
-
- case EOF:
- done = true;
- break;
-
- default:
- LOGE("unexpected character between keys\n");
- goto exit;
- }
-
- LOGI("read key e=%d\n", key->exponent);
- }
- }
-
- fclose(f);
- return out;
-
-exit:
- if (f) fclose(f);
- free(out);
- *numKeys = 0;
- return NULL;
-}
-
static int
really_install_package(const char *path, int* wipe_cache)
{
diff --git a/minzip/Zip.c b/minzip/Zip.c
index c87f038c5..439e5d9cd 100644
--- a/minzip/Zip.c
+++ b/minzip/Zip.c
@@ -985,6 +985,7 @@ bool mzExtractRecursive(const ZipArchive *pArchive,
unsigned int i;
bool seenMatch = false;
int ok = true;
+ int extractCount = 0;
for (i = 0; i < pArchive->numEntries; i++) {
ZipEntry *pEntry = pArchive->pEntries + i;
if (pEntry->fileNameLen < zipDirLen) {
@@ -1150,13 +1151,16 @@ bool mzExtractRecursive(const ZipArchive *pArchive,
break;
}
- LOGD("Extracted file \"%s\"\n", targetFile);
+ LOGV("Extracted file \"%s\"\n", targetFile);
+ ++extractCount;
}
}
if (callback != NULL) callback(targetFile, cookie);
}
+ LOGD("Extracted %d file(s)\n", extractCount);
+
free(helper.buf);
free(zpath);
diff --git a/roots.cpp b/roots.cpp
index ca37cf149..09471225d 100644
--- a/roots.cpp
+++ b/roots.cpp
@@ -22,120 +22,48 @@
#include <unistd.h>
#include <ctype.h>
+#include <fs_mgr.h>
#include "mtdutils/mtdutils.h"
#include "mtdutils/mounts.h"
#include "roots.h"
#include "common.h"
#include "make_ext4fs.h"
-static int num_volumes = 0;
-static Volume* device_volumes = NULL;
+static struct fstab *fstab = NULL;
extern struct selabel_handle *sehandle;
-static int parse_options(char* options, Volume* volume) {
- char* option;
- while ((option = strtok(options, ","))) {
- options = NULL;
-
- if (strncmp(option, "length=", 7) == 0) {
- volume->length = strtoll(option+7, NULL, 10);
- } else {
- LOGE("bad option \"%s\"\n", option);
- return -1;
- }
- }
- return 0;
-}
-
-void load_volume_table() {
- int alloc = 2;
- device_volumes = (Volume*)malloc(alloc * sizeof(Volume));
-
- // Insert an entry for /tmp, which is the ramdisk and is always mounted.
- device_volumes[0].mount_point = "/tmp";
- device_volumes[0].fs_type = "ramdisk";
- device_volumes[0].device = NULL;
- device_volumes[0].device2 = NULL;
- device_volumes[0].length = 0;
- num_volumes = 1;
+void load_volume_table()
+{
+ int i;
+ int ret;
- FILE* fstab = fopen("/etc/recovery.fstab", "r");
- if (fstab == NULL) {
- LOGE("failed to open /etc/recovery.fstab (%s)\n", strerror(errno));
+ fstab = fs_mgr_read_fstab("/etc/recovery.fstab");
+ if (!fstab) {
+ LOGE("failed to read /etc/recovery.fstab\n");
return;
}
- char buffer[1024];
- int i;
- while (fgets(buffer, sizeof(buffer)-1, fstab)) {
- for (i = 0; buffer[i] && isspace(buffer[i]); ++i);
- if (buffer[i] == '\0' || buffer[i] == '#') continue;
-
- char* original = strdup(buffer);
-
- char* mount_point = strtok(buffer+i, " \t\n");
- char* fs_type = strtok(NULL, " \t\n");
- char* device = strtok(NULL, " \t\n");
- // lines may optionally have a second device, to use if
- // mounting the first one fails.
- char* options = NULL;
- char* device2 = strtok(NULL, " \t\n");
- if (device2) {
- if (device2[0] == '/') {
- options = strtok(NULL, " \t\n");
- } else {
- options = device2;
- device2 = NULL;
- }
- }
-
- if (mount_point && fs_type && device) {
- while (num_volumes >= alloc) {
- alloc *= 2;
- device_volumes = (Volume*)realloc(device_volumes, alloc*sizeof(Volume));
- }
- device_volumes[num_volumes].mount_point = strdup(mount_point);
- device_volumes[num_volumes].fs_type = strdup(fs_type);
- device_volumes[num_volumes].device = strdup(device);
- device_volumes[num_volumes].device2 =
- device2 ? strdup(device2) : NULL;
-
- device_volumes[num_volumes].length = 0;
- if (parse_options(options, device_volumes + num_volumes) != 0) {
- LOGE("skipping malformed recovery.fstab line: %s\n", original);
- } else {
- ++num_volumes;
- }
- } else {
- LOGE("skipping malformed recovery.fstab line: %s\n", original);
- }
- free(original);
+ ret = fs_mgr_add_entry(fstab, "/tmp", "ramdisk", "ramdisk", 0);
+ if (ret < 0 ) {
+ LOGE("failed to add /tmp entry to fstab\n");
+ fs_mgr_free_fstab(fstab);
+ fstab = NULL;
+ return;
}
- fclose(fstab);
-
printf("recovery filesystem table\n");
printf("=========================\n");
- for (i = 0; i < num_volumes; ++i) {
- Volume* v = &device_volumes[i];
- printf(" %d %s %s %s %s %lld\n", i, v->mount_point, v->fs_type,
- v->device, v->device2, v->length);
+ for (i = 0; i < fstab->num_entries; ++i) {
+ Volume* v = &fstab->recs[i];
+ printf(" %d %s %s %s %lld\n", i, v->mount_point, v->fs_type,
+ v->blk_device, v->length);
}
printf("\n");
}
Volume* volume_for_path(const char* path) {
- int i;
- for (i = 0; i < num_volumes; ++i) {
- Volume* v = device_volumes+i;
- int len = strlen(v->mount_point);
- if (strncmp(path, v->mount_point, len) == 0 &&
- (path[len] == '\0' || path[len] == '/')) {
- return v;
- }
- }
- return NULL;
+ return fs_mgr_get_entry_for_mount_point(fstab, path);
}
int ensure_path_mounted(const char* path) {
@@ -169,27 +97,19 @@ int ensure_path_mounted(const char* path) {
// mount an MTD partition as a YAFFS2 filesystem.
mtd_scan_partitions();
const MtdPartition* partition;
- partition = mtd_find_partition_by_name(v->device);
+ partition = mtd_find_partition_by_name(v->blk_device);
if (partition == NULL) {
LOGE("failed to find \"%s\" partition to mount at \"%s\"\n",
- v->device, v->mount_point);
+ v->blk_device, v->mount_point);
return -1;
}
return mtd_mount_partition(partition, v->mount_point, v->fs_type, 0);
} else if (strcmp(v->fs_type, "ext4") == 0 ||
strcmp(v->fs_type, "vfat") == 0) {
- result = mount(v->device, v->mount_point, v->fs_type,
+ result = mount(v->blk_device, v->mount_point, v->fs_type,
MS_NOATIME | MS_NODEV | MS_NODIRATIME, "");
if (result == 0) return 0;
- if (v->device2) {
- LOGW("failed to mount %s (%s); trying %s\n",
- v->device, strerror(errno), v->device2);
- result = mount(v->device2, v->mount_point, v->fs_type,
- MS_NOATIME | MS_NODEV | MS_NODIRATIME, "");
- if (result == 0) return 0;
- }
-
LOGE("failed to mount %s (%s)\n", v->mount_point, strerror(errno));
return -1;
}
@@ -249,31 +169,31 @@ int format_volume(const char* volume) {
if (strcmp(v->fs_type, "yaffs2") == 0 || strcmp(v->fs_type, "mtd") == 0) {
mtd_scan_partitions();
- const MtdPartition* partition = mtd_find_partition_by_name(v->device);
+ const MtdPartition* partition = mtd_find_partition_by_name(v->blk_device);
if (partition == NULL) {
- LOGE("format_volume: no MTD partition \"%s\"\n", v->device);
+ LOGE("format_volume: no MTD partition \"%s\"\n", v->blk_device);
return -1;
}
MtdWriteContext *write = mtd_write_partition(partition);
if (write == NULL) {
- LOGW("format_volume: can't open MTD \"%s\"\n", v->device);
+ LOGW("format_volume: can't open MTD \"%s\"\n", v->blk_device);
return -1;
} else if (mtd_erase_blocks(write, -1) == (off_t) -1) {
- LOGW("format_volume: can't erase MTD \"%s\"\n", v->device);
+ LOGW("format_volume: can't erase MTD \"%s\"\n", v->blk_device);
mtd_write_close(write);
return -1;
} else if (mtd_write_close(write)) {
- LOGW("format_volume: can't close MTD \"%s\"\n", v->device);
+ LOGW("format_volume: can't close MTD \"%s\"\n", v->blk_device);
return -1;
}
return 0;
}
if (strcmp(v->fs_type, "ext4") == 0) {
- int result = make_ext4fs(v->device, v->length, volume, sehandle);
+ int result = make_ext4fs(v->blk_device, v->length, volume, sehandle);
if (result != 0) {
- LOGE("format_volume: make_extf4fs failed on %s\n", v->device);
+ LOGE("format_volume: make_extf4fs failed on %s\n", v->blk_device);
return -1;
}
return 0;
diff --git a/verifier.cpp b/verifier.cpp
index 1c5a41d1b..5f4c981e5 100644
--- a/verifier.cpp
+++ b/verifier.cpp
@@ -179,9 +179,111 @@ int verify_file(const char* path, const RSAPublicKey *pKeys, unsigned int numKey
LOGI("whole-file signature verified against key %d\n", i);
free(eocd);
return VERIFY_SUCCESS;
+ } else {
+ LOGI("failed to verify against key %d\n", i);
}
}
free(eocd);
LOGE("failed to verify whole-file signature\n");
return VERIFY_FAILURE;
}
+
+// Reads a file containing one or more public keys as produced by
+// DumpPublicKey: this is an RSAPublicKey struct as it would appear
+// as a C source literal, eg:
+//
+// "{64,0xc926ad21,{1795090719,...,-695002876},{-857949815,...,1175080310}}"
+//
+// For key versions newer than the original 2048-bit e=3 keys
+// supported by Android, the string is preceded by a version
+// identifier, eg:
+//
+// "v2 {64,0xc926ad21,{1795090719,...,-695002876},{-857949815,...,1175080310}}"
+//
+// (Note that the braces and commas in this example are actual
+// characters the parser expects to find in the file; the ellipses
+// indicate more numbers omitted from this example.)
+//
+// The file may contain multiple keys in this format, separated by
+// commas. The last key must not be followed by a comma.
+//
+// Returns NULL if the file failed to parse, or if it contain zero keys.
+RSAPublicKey*
+load_keys(const char* filename, int* numKeys) {
+ RSAPublicKey* out = NULL;
+ *numKeys = 0;
+
+ FILE* f = fopen(filename, "r");
+ if (f == NULL) {
+ LOGE("opening %s: %s\n", filename, strerror(errno));
+ goto exit;
+ }
+
+ {
+ int i;
+ bool done = false;
+ while (!done) {
+ ++*numKeys;
+ out = (RSAPublicKey*)realloc(out, *numKeys * sizeof(RSAPublicKey));
+ RSAPublicKey* key = out + (*numKeys - 1);
+
+ char start_char;
+ if (fscanf(f, " %c", &start_char) != 1) goto exit;
+ if (start_char == '{') {
+ // a version 1 key has no version specifier.
+ key->exponent = 3;
+ } else if (start_char == 'v') {
+ int version;
+ if (fscanf(f, "%d {", &version) != 1) goto exit;
+ if (version == 2) {
+ key->exponent = 65537;
+ } else {
+ goto exit;
+ }
+ }
+
+ if (fscanf(f, " %i , 0x%x , { %u",
+ &(key->len), &(key->n0inv), &(key->n[0])) != 3) {
+ goto exit;
+ }
+ if (key->len != RSANUMWORDS) {
+ LOGE("key length (%d) does not match expected size\n", key->len);
+ goto exit;
+ }
+ for (i = 1; i < key->len; ++i) {
+ if (fscanf(f, " , %u", &(key->n[i])) != 1) goto exit;
+ }
+ if (fscanf(f, " } , { %u", &(key->rr[0])) != 1) goto exit;
+ for (i = 1; i < key->len; ++i) {
+ if (fscanf(f, " , %u", &(key->rr[i])) != 1) goto exit;
+ }
+ fscanf(f, " } } ");
+
+ // if the line ends in a comma, this file has more keys.
+ switch (fgetc(f)) {
+ case ',':
+ // more keys to come.
+ break;
+
+ case EOF:
+ done = true;
+ break;
+
+ default:
+ LOGE("unexpected character between keys\n");
+ goto exit;
+ }
+
+ LOGI("read key e=%d\n", key->exponent);
+ }
+ }
+
+ fclose(f);
+ return out;
+
+exit:
+ if (f) fclose(f);
+ free(out);
+ *numKeys = 0;
+ return NULL;
+}
diff --git a/verifier.h b/verifier.h
index 1bdfca6dd..e9ef3b722 100644
--- a/verifier.h
+++ b/verifier.h
@@ -24,6 +24,8 @@
*/
int verify_file(const char* path, const RSAPublicKey *pKeys, unsigned int numKeys);
+RSAPublicKey* load_keys(const char* filename, int* numKeys);
+
#define VERIFY_SUCCESS 0
#define VERIFY_FAILURE 1
diff --git a/verifier_test.cpp b/verifier_test.cpp
index 01d092680..79c55783d 100644
--- a/verifier_test.cpp
+++ b/verifier_test.cpp
@@ -129,21 +129,26 @@ class FakeUI : public RecoveryUI {
};
int main(int argc, char **argv) {
- if (argc != 2 && argc != 3) {
- fprintf(stderr, "Usage: %s [-f4] <package>\n", argv[0]);
+ if (argc < 2 || argc > 4) {
+ fprintf(stderr, "Usage: %s [-f4 | -file <keys>] <package>\n", argv[0]);
return 2;
}
RSAPublicKey* key = &test_key;
+ int num_keys = 1;
++argv;
if (strcmp(argv[0], "-f4") == 0) {
++argv;
key = &test_f4_key;
+ } else if (strcmp(argv[0], "-file") == 0) {
+ ++argv;
+ key = load_keys(argv[0], &num_keys);
+ ++argv;
}
ui = new FakeUI();
- int result = verify_file(*argv, key, 1);
+ int result = verify_file(*argv, key, num_keys);
if (result == VERIFY_SUCCESS) {
printf("SUCCESS\n");
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 16:58:15 +0200