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-rw-r--r--extra-functions.c481
1 files changed, 0 insertions, 481 deletions
diff --git a/extra-functions.c b/extra-functions.c
index 9157e2397..e01ab83b4 100644
--- a/extra-functions.c
+++ b/extra-functions.c
@@ -222,487 +222,6 @@ int __pclose(FILE *iop) {
return (pid == -1 ? -1 : pstat);
}
-char* get_path (char* path) {
- char *s;
-
- /* Go to the end of the string. */
- s = path + strlen(path) - 1;
-
- /* Strip off trailing /s (unless it is also the leading /). */
- while (path < s && s[0] == '/')
- s--;
-
- /* Strip the last component. */
- while (path <= s && s[0] != '/')
- s--;
-
- while (path < s && s[0] == '/')
- s--;
-
- if (s < path)
- return ".";
-
- s[1] = '\0';
- return path;
-}
-
-char* basename(char* name) {
- const char* base;
- for (base = name; *name; name++)
- {
- if(*name == '/')
- {
- base = name + 1;
- }
- }
- return (char *) base;
-}
-
-/*
- Checks md5 for a path
- Return values:
- -1 : MD5 does not exist
- 0 : Failed
- 1 : Success
-*/
-int check_md5(char* path) {
- int o;
- char cmd[PATH_MAX + 30];
- char md5file[PATH_MAX + 40];
- strcpy(md5file, path);
- strcat(md5file, ".md5");
- char dirpath[PATH_MAX];
- char* file;
- if (access(md5file, F_OK ) != -1) {
- strcpy(dirpath, md5file);
- get_path(dirpath);
- chdir(dirpath);
- file = basename(md5file);
- sprintf(cmd, "/sbin/busybox md5sum -c '%s'", file);
- FILE * cs = __popen(cmd, "r");
- char cs_s[PATH_MAX + 50];
- fgets(cs_s, PATH_MAX + 50, cs);
- char* OK = strstr(cs_s, "OK");
- if (OK != NULL) {
- printf("MD5 is good. returning 1\n");
- o = 1;
- }
- else {
- printf("MD5 is bad. return -2\n");
- o = -2;
- }
-
- __pclose(cs);
- }
- else {
- //No md5 file
- printf("setting o to -1\n");
- o = -1;
- }
-
- return o;
-}
-
-int TWtry_update_binary(const char *path, ZipArchive *zip, int* wipe_cache) {
- const ZipEntry* binary_entry =
- mzFindZipEntry(zip, ASSUMED_UPDATE_BINARY_NAME);
- if (binary_entry == NULL) {
- mzCloseZipArchive(zip);
- return INSTALL_CORRUPT;
- }
- const char* binary = "/tmp/update_binary";
- unlink(binary);
- int fd = creat(binary, 0755);
- if (fd < 0) {
- mzCloseZipArchive(zip);
- LOGE("Can't make %s\n", binary);
- return INSTALL_ERROR;
- }
- bool ok = mzExtractZipEntryToFile(zip, binary_entry, fd);
- close(fd);
- mzCloseZipArchive(zip);
-
- if (!ok) {
- LOGE("Can't copy %s\n", ASSUMED_UPDATE_BINARY_NAME);
- return INSTALL_ERROR;
- }
-
- int pipefd[2];
- pipe(pipefd);
-
- // When executing the update binary contained in the package, the
- // arguments passed are:
- //
- // - the version number for this interface
- //
- // - an fd to which the program can write in order to update the
- // progress bar. The program can write single-line commands:
- //
- // progress <frac> <secs>
- // fill up the next <frac> part of of the progress bar
- // over <secs> seconds. If <secs> is zero, use
- // set_progress commands to manually control the
- // progress of this segment of the bar
- //
- // set_progress <frac>
- // <frac> should be between 0.0 and 1.0; sets the
- // progress bar within the segment defined by the most
- // recent progress command.
- //
- // firmware <"hboot"|"radio"> <filename>
- // arrange to install the contents of <filename> in the
- // given partition on reboot.
- //
- // (API v2: <filename> may start with "PACKAGE:" to
- // indicate taking a file from the OTA package.)
- //
- // (API v3: this command no longer exists.)
- //
- // ui_print <string>
- // display <string> on the screen.
- //
- // - the name of the package zip file.
- //
-
- const char** args = (const char**)malloc(sizeof(char*) * 5);
- args[0] = binary;
- args[1] = EXPAND(RECOVERY_API_VERSION); // defined in Android.mk
- char* temp = (char*)malloc(10);
- sprintf(temp, "%d", pipefd[1]);
- args[2] = temp;
- args[3] = (char*)path;
- args[4] = NULL;
-
- pid_t pid = fork();
- if (pid == 0) {
- close(pipefd[0]);
- execv(binary, (char* const*)args);
- fprintf(stdout, "E:Can't run %s (error)\n", binary);
- _exit(-1);
- }
- close(pipefd[1]);
- *wipe_cache = 0;
-
- char buffer[1024];
- FILE* from_child = fdopen(pipefd[0], "r");
- LOGI("8\n");
- while (fgets(buffer, sizeof(buffer), from_child) != NULL) {
- char* command = strtok(buffer, " \n");
- if (command == NULL) {
- continue;
- } else if (strcmp(command, "progress") == 0) {
- char* fraction_s = strtok(NULL, " \n");
- char* seconds_s = strtok(NULL, " \n");
-
- float fraction = strtof(fraction_s, NULL);
- int seconds = strtol(seconds_s, NULL, 10);
-
- //ui->ShowProgress(fraction * (1-VERIFICATION_PROGRESS_FRACTION), seconds);
- } else if (strcmp(command, "set_progress") == 0) {
- char* fraction_s = strtok(NULL, " \n");
- float fraction = strtof(fraction_s, NULL);
- //ui->SetProgress(fraction);
- } else if (strcmp(command, "ui_print") == 0) {
- char* str = strtok(NULL, "\n");
- if (str) {
- //ui->Print("%s", str);
- } else {
- //ui->Print("\n");
- }
- } else if (strcmp(command, "wipe_cache") == 0) {
- *wipe_cache = 1;
- } else if (strcmp(command, "clear_display") == 0) {
- //ui->SetBackground(RecoveryUI::NONE);
- } else {
- LOGE("unknown command [%s]\n", command);
- }
- }
- fclose(from_child);
-
- int status;
- waitpid(pid, &status, 0);
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
- LOGE("Error in %s\n(Status %d)\n", path, WEXITSTATUS(status));
- return INSTALL_ERROR;
- }
- return INSTALL_SUCCESS;
-}
-
-// Look for an RSA signature embedded in the .ZIP file comment given
-// the path to the zip. Verify it matches one of the given public
-// keys.
-//
-// Return VERIFY_SUCCESS, VERIFY_FAILURE (if any error is encountered
-// or no key matches the signature).
-
-int TWverify_file(const char* path, const RSAPublicKey *pKeys, unsigned int numKeys) {
- //ui->SetProgress(0.0);
-
- FILE* f = fopen(path, "rb");
- if (f == NULL) {
- LOGE("failed to open %s (%s)\n", path, strerror(errno));
- return VERIFY_FAILURE;
- }
-
- // An archive with a whole-file signature will end in six bytes:
- //
- // (2-byte signature start) $ff $ff (2-byte comment size)
- //
- // (As far as the ZIP format is concerned, these are part of the
- // archive comment.) We start by reading this footer, this tells
- // us how far back from the end we have to start reading to find
- // the whole comment.
-
-#define FOOTER_SIZE 6
-
- if (fseek(f, -FOOTER_SIZE, SEEK_END) != 0) {
- LOGE("failed to seek in %s (%s)\n", path, strerror(errno));
- fclose(f);
- return VERIFY_FAILURE;
- }
-
- unsigned char footer[FOOTER_SIZE];
- if (fread(footer, 1, FOOTER_SIZE, f) != FOOTER_SIZE) {
- LOGE("failed to read footer from %s (%s)\n", path, strerror(errno));
- fclose(f);
- return VERIFY_FAILURE;
- }
-
- if (footer[2] != 0xff || footer[3] != 0xff) {
- fclose(f);
- return VERIFY_FAILURE;
- }
-
- size_t comment_size = footer[4] + (footer[5] << 8);
- size_t signature_start = footer[0] + (footer[1] << 8);
- LOGI("comment is %d bytes; signature %d bytes from end\n",
- comment_size, signature_start);
-
- if (signature_start - FOOTER_SIZE < RSANUMBYTES) {
- // "signature" block isn't big enough to contain an RSA block.
- LOGE("signature is too short\n");
- fclose(f);
- return VERIFY_FAILURE;
- }
-
-#define EOCD_HEADER_SIZE 22
-
- // The end-of-central-directory record is 22 bytes plus any
- // comment length.
- size_t eocd_size = comment_size + EOCD_HEADER_SIZE;
-
- if (fseek(f, -eocd_size, SEEK_END) != 0) {
- LOGE("failed to seek in %s (%s)\n", path, strerror(errno));
- fclose(f);
- return VERIFY_FAILURE;
- }
-
- // Determine how much of the file is covered by the signature.
- // This is everything except the signature data and length, which
- // includes all of the EOCD except for the comment length field (2
- // bytes) and the comment data.
- size_t signed_len = ftell(f) + EOCD_HEADER_SIZE - 2;
-
- unsigned char* eocd = (unsigned char*)malloc(eocd_size);
- if (eocd == NULL) {
- LOGE("malloc for EOCD record failed\n");
- fclose(f);
- return VERIFY_FAILURE;
- }
- if (fread(eocd, 1, eocd_size, f) != eocd_size) {
- LOGE("failed to read eocd from %s (%s)\n", path, strerror(errno));
- fclose(f);
- return VERIFY_FAILURE;
- }
-
- // If this is really is the EOCD record, it will begin with the
- // magic number $50 $4b $05 $06.
- if (eocd[0] != 0x50 || eocd[1] != 0x4b ||
- eocd[2] != 0x05 || eocd[3] != 0x06) {
- LOGE("signature length doesn't match EOCD marker\n");
- fclose(f);
- return VERIFY_FAILURE;
- }
-
- size_t i;
- for (i = 4; i < eocd_size-3; ++i) {
- if (eocd[i ] == 0x50 && eocd[i+1] == 0x4b &&
- eocd[i+2] == 0x05 && eocd[i+3] == 0x06) {
- // if the sequence $50 $4b $05 $06 appears anywhere after
- // the real one, minzip will find the later (wrong) one,
- // which could be exploitable. Fail verification if
- // this sequence occurs anywhere after the real one.
- LOGE("EOCD marker occurs after start of EOCD\n");
- fclose(f);
- return VERIFY_FAILURE;
- }
- }
-
-#define BUFFER_SIZE 4096
-
- SHA_CTX ctx;
- SHA_init(&ctx);
- unsigned char* buffer = (unsigned char*)malloc(BUFFER_SIZE);
- if (buffer == NULL) {
- LOGE("failed to alloc memory for sha1 buffer\n");
- fclose(f);
- return VERIFY_FAILURE;
- }
-
- double frac = -1.0;
- size_t so_far = 0;
- fseek(f, 0, SEEK_SET);
- while (so_far < signed_len) {
- size_t size = BUFFER_SIZE;
- if (signed_len - so_far < size) size = signed_len - so_far;
- if (fread(buffer, 1, size, f) != size) {
- LOGE("failed to read data from %s (%s)\n", path, strerror(errno));
- fclose(f);
- return VERIFY_FAILURE;
- }
- SHA_update(&ctx, buffer, size);
- so_far += size;
- double f = so_far / (double)signed_len;
- if (f > frac + 0.02 || size == so_far) {
- //ui->SetProgress(f);
- frac = f;
- }
- }
- fclose(f);
- free(buffer);
-
- const uint8_t* sha1 = SHA_final(&ctx);
- for (i = 0; i < numKeys; ++i) {
- // The 6 bytes is the "(signature_start) $ff $ff (comment_size)" that
- // the signing tool appends after the signature itself.
- if (RSA_verify(pKeys+i, eocd + eocd_size - 6 - RSANUMBYTES,
- RSANUMBYTES, sha1)) {
- LOGI("whole-file signature verified against key %d\n", i);
- free(eocd);
- return VERIFY_SUCCESS;
- }
- }
- 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}}"
-//
-// (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*
-TWload_keys(const char* filename, int* numKeys) {
- RSAPublicKey* out = NULL;
- *numKeys = 0;
-
- FILE* f = fopen(filename, "r");
- if (f == NULL) {
- LOGE("opening %s: ERROR\n", filename);
- goto exit;
- }
-
- {
- int i;
- bool done = false;
- while (!done) {
- ++*numKeys;
- out = (RSAPublicKey*)realloc(out, *numKeys * sizeof(RSAPublicKey));
- RSAPublicKey* key = out + (*numKeys - 1);
- 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;
- }
- }
- }
-
- fclose(f);
- return out;
-
-exit:
- if (f) fclose(f);
- free(out);
- *numKeys = 0;
- return NULL;
-}
-
-int TWinstall_zip(const char* path, int* wipe_cache) {
- int err;
-
- if (DataManager_GetIntValue(TW_SIGNED_ZIP_VERIFY_VAR)) {
- int numKeys;
- RSAPublicKey* loadedKeys = TWload_keys(PUBLIC_KEYS_FILE, &numKeys);
- if (loadedKeys == NULL) {
- LOGE("Failed to load keys\n");
- return -1;
- }
- LOGI("%d key(s) loaded from %s\n", numKeys, PUBLIC_KEYS_FILE);
-
- // Give verification half the progress bar...
- //ui->Print("Verifying update package...\n");
- //ui->SetProgressType(RecoveryUI::DETERMINATE);
- //ui->ShowProgress(VERIFICATION_PROGRESS_FRACTION, VERIFICATION_PROGRESS_TIME);
-
- err = TWverify_file(path, loadedKeys, numKeys);
- free(loadedKeys);
- LOGI("verify_file returned %d\n", err);
- if (err != VERIFY_SUCCESS) {
- LOGE("signature verification failed\n");
- return -1;
- }
- }
- /* Try to open the package.
- */
- ZipArchive zip;
- err = mzOpenZipArchive(path, &zip);
- if (err != 0) {
- LOGE("Can't open %s\n(%s)\n", path, err != -1 ? strerror(err) : "bad");
- return INSTALL_CORRUPT;
- }
-
- /* Verify and install the contents of the package.
- */
- //ui->Print("Installing update...\n");
- return TWtry_update_binary(path, &zip, wipe_cache);
-}
-
//partial kangbang from system/vold
#ifndef CUSTOM_LUN_FILE
#define CUSTOM_LUN_FILE "/sys/devices/platform/usb_mass_storage/lun%d/file"
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-17 07:28:43 +0200