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-rw-r--r--utils/askfirst.c62
-rw-r--r--utils/md5.c242
-rw-r--r--utils/md5.h35
-rw-r--r--utils/utils.c122
-rw-r--r--utils/utils.h53
5 files changed, 514 insertions, 0 deletions
diff --git a/utils/askfirst.c b/utils/askfirst.c
new file mode 100644
index 0000000..6ad77aa
--- /dev/null
+++ b/utils/askfirst.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+static int redirect_output(const char *dev)
+{
+ pid_t p = setsid();
+ int fd;
+
+ chdir("/dev");
+ fd = open(dev, O_RDWR);
+ chdir("/");
+
+ if (fd < 0)
+ return -1;
+
+ dup2(fd, STDIN_FILENO);
+ dup2(fd, STDOUT_FILENO);
+ dup2(fd, STDERR_FILENO);
+ tcsetpgrp(fd, p);
+ close(fd);
+
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ int c;
+
+ if (redirect_output(argv[1]))
+ fprintf(stderr, "%s: Failed to open %s\n", argv[0], argv[1]);
+
+ printf("Please press Enter to activate this console.\n");
+ do {
+ c = getchar();
+ if (c == EOF)
+ return -1;
+ }
+ while (c != 0xA);
+
+ execvp(argv[2], &argv[2]);
+ printf("%s: Failed to execute %s\n", argv[0], argv[2]);
+
+ return -1;
+}
diff --git a/utils/md5.c b/utils/md5.c
new file mode 100644
index 0000000..ec24dd2
--- /dev/null
+++ b/utils/md5.c
@@ -0,0 +1,242 @@
+/*
+ * md5.c - Compute MD5 checksum of strings according to the
+ * definition of MD5 in RFC 1321 from April 1992.
+ *
+ * Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
+ *
+ * Copyright (C) 1995-1999 Free Software Foundation, Inc.
+ * Copyright (C) 2001 Manuel Novoa III
+ * Copyright (C) 2003 Glenn L. McGrath
+ * Copyright (C) 2003 Erik Andersen
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+#include <libubox/blob.h> /* TODO: better include for bswap_32 compat */
+#include "md5.h"
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define SWAP_LE32(x) (x)
+#else
+#define SWAP_LE32(x) bswap_32(x)
+#endif
+
+/* Initialize structure containing state of computation.
+ * (RFC 1321, 3.3: Step 3)
+ */
+void md5_begin(md5_ctx_t *ctx)
+{
+ ctx->A = 0x67452301;
+ ctx->B = 0xefcdab89;
+ ctx->C = 0x98badcfe;
+ ctx->D = 0x10325476;
+
+ ctx->total = 0;
+ ctx->buflen = 0;
+}
+
+/* These are the four functions used in the four steps of the MD5 algorithm
+ * and defined in the RFC 1321. The first function is a little bit optimized
+ * (as found in Colin Plumbs public domain implementation).
+ * #define FF(b, c, d) ((b & c) | (~b & d))
+ */
+# define FF(b, c, d) (d ^ (b & (c ^ d)))
+# define FG(b, c, d) FF (d, b, c)
+# define FH(b, c, d) (b ^ c ^ d)
+# define FI(b, c, d) (c ^ (b | ~d))
+
+/* Hash a single block, 64 bytes long and 4-byte aligned. */
+static void md5_hash_block(const void *buffer, md5_ctx_t *ctx)
+{
+ uint32_t correct_words[16];
+ const uint32_t *words = buffer;
+
+ static const uint32_t C_array[] = {
+ /* round 1 */
+ 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
+ 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
+ 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
+ 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
+ /* round 2 */
+ 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
+ 0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8,
+ 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
+ 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
+ /* round 3 */
+ 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
+ 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
+ 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
+ 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
+ /* round 4 */
+ 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
+ 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
+ 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
+ 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
+ };
+
+ static const char P_array[] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */
+ 1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, /* 2 */
+ 5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, /* 3 */
+ 0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9 /* 4 */
+ };
+
+ static const char S_array[] = {
+ 7, 12, 17, 22,
+ 5, 9, 14, 20,
+ 4, 11, 16, 23,
+ 6, 10, 15, 21
+ };
+
+ uint32_t A = ctx->A;
+ uint32_t B = ctx->B;
+ uint32_t C = ctx->C;
+ uint32_t D = ctx->D;
+
+ uint32_t *cwp = correct_words;
+
+# define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
+
+ const uint32_t *pc;
+ const char *pp;
+ const char *ps;
+ int i;
+ uint32_t temp;
+
+ for (i = 0; i < 16; i++) {
+ cwp[i] = SWAP_LE32(words[i]);
+ }
+ words += 16;
+
+ pc = C_array;
+ pp = P_array;
+ ps = S_array;
+
+ for (i = 0; i < 16; i++) {
+ temp = A + FF(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ CYCLIC(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+
+ ps += 4;
+ for (i = 0; i < 16; i++) {
+ temp = A + FG(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ CYCLIC(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+ ps += 4;
+ for (i = 0; i < 16; i++) {
+ temp = A + FH(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ CYCLIC(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+ ps += 4;
+ for (i = 0; i < 16; i++) {
+ temp = A + FI(B, C, D) + cwp[(int) (*pp++)] + *pc++;
+ CYCLIC(temp, ps[i & 3]);
+ temp += B;
+ A = D;
+ D = C;
+ C = B;
+ B = temp;
+ }
+
+
+ ctx->A += A;
+ ctx->B += B;
+ ctx->C += C;
+ ctx->D += D;
+}
+
+/* Feed data through a temporary buffer to call md5_hash_aligned_block()
+ * with chunks of data that are 4-byte aligned and a multiple of 64 bytes.
+ * This function's internal buffer remembers previous data until it has 64
+ * bytes worth to pass on. Call md5_end() to flush this buffer. */
+
+void md5_hash(const void *buffer, size_t len, md5_ctx_t *ctx)
+{
+ char *buf = (char *)buffer;
+
+ /* RFC 1321 specifies the possible length of the file up to 2^64 bits,
+ * Here we only track the number of bytes. */
+
+ ctx->total += len;
+
+ // Process all input.
+
+ while (len) {
+ unsigned i = 64 - ctx->buflen;
+
+ // Copy data into aligned buffer.
+
+ if (i > len)
+ i = len;
+ memcpy(ctx->buffer + ctx->buflen, buf, i);
+ len -= i;
+ ctx->buflen += i;
+ buf += i;
+
+ // When buffer fills up, process it.
+
+ if (ctx->buflen == 64) {
+ md5_hash_block(ctx->buffer, ctx);
+ ctx->buflen = 0;
+ }
+ }
+}
+
+/* Process the remaining bytes in the buffer and put result from CTX
+ * in first 16 bytes following RESBUF. The result is always in little
+ * endian byte order, so that a byte-wise output yields to the wanted
+ * ASCII representation of the message digest.
+ *
+ * IMPORTANT: On some systems it is required that RESBUF is correctly
+ * aligned for a 32 bits value.
+ */
+void md5_end(void *resbuf, md5_ctx_t *ctx)
+{
+ char *buf = ctx->buffer;
+ int i;
+
+ /* Pad data to block size. */
+
+ buf[ctx->buflen++] = 0x80;
+ memset(buf + ctx->buflen, 0, 128 - ctx->buflen);
+
+ /* Put the 64-bit file length in *bits* at the end of the buffer. */
+ ctx->total <<= 3;
+ if (ctx->buflen > 56)
+ buf += 64;
+
+ for (i = 0; i < 8; i++)
+ buf[56 + i] = ctx->total >> (i*8);
+
+ /* Process last bytes. */
+ if (buf != ctx->buffer)
+ md5_hash_block(ctx->buffer, ctx);
+ md5_hash_block(buf, ctx);
+
+ /* Put result from CTX in first 16 bytes following RESBUF. The result is
+ * always in little endian byte order, so that a byte-wise output yields
+ * to the wanted ASCII representation of the message digest.
+ *
+ * IMPORTANT: On some systems it is required that RESBUF is correctly
+ * aligned for a 32 bits value.
+ */
+ ((uint32_t *) resbuf)[0] = SWAP_LE32(ctx->A);
+ ((uint32_t *) resbuf)[1] = SWAP_LE32(ctx->B);
+ ((uint32_t *) resbuf)[2] = SWAP_LE32(ctx->C);
+ ((uint32_t *) resbuf)[3] = SWAP_LE32(ctx->D);
+}
diff --git a/utils/md5.h b/utils/md5.h
new file mode 100644
index 0000000..e1731ef
--- /dev/null
+++ b/utils/md5.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __PROCD_MD5_H
+#define __PROCD_MD5_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+typedef struct md5_ctx {
+ uint32_t A;
+ uint32_t B;
+ uint32_t C;
+ uint32_t D;
+ uint64_t total;
+ uint32_t buflen;
+ char buffer[128];
+} md5_ctx_t;
+
+void md5_begin(md5_ctx_t *ctx);
+void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
+void md5_end(void *resbuf, md5_ctx_t *ctx);
+
+#endif
diff --git a/utils/utils.c b/utils/utils.c
new file mode 100644
index 0000000..59d02f1
--- /dev/null
+++ b/utils/utils.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <libubox/avl.h>
+#include <libubox/avl-cmp.h>
+#include "utils.h"
+
+void
+__blobmsg_list_init(struct blobmsg_list *list, int offset, int len, blobmsg_list_cmp cmp)
+{
+ avl_init(&list->avl, avl_strcmp, false, NULL);
+ list->node_offset = offset;
+ list->node_len = len;
+ list->cmp = cmp;
+}
+
+int
+blobmsg_list_fill(struct blobmsg_list *list, void *data, int len, bool array)
+{
+ struct avl_tree *tree = &list->avl;
+ struct blobmsg_list_node *node;
+ struct blob_attr *cur;
+ void *ptr;
+ int count = 0;
+ int rem = len;
+
+ __blob_for_each_attr(cur, data, rem) {
+ if (!blobmsg_check_attr(cur, !array))
+ continue;
+
+ ptr = calloc(1, list->node_len);
+ if (!ptr)
+ return -1;
+
+ node = (void *) ((char *)ptr + list->node_offset);
+ if (array)
+ node->avl.key = blobmsg_data(cur);
+ else
+ node->avl.key = blobmsg_name(cur);
+ node->data = cur;
+ if (avl_insert(tree, &node->avl)) {
+ free(ptr);
+ continue;
+ }
+
+ count++;
+ }
+
+ return count;
+}
+
+void
+blobmsg_list_move(struct blobmsg_list *list, struct blobmsg_list *src)
+{
+ struct blobmsg_list_node *node, *tmp;
+ void *ptr;
+
+ avl_remove_all_elements(&src->avl, node, avl, tmp) {
+ if (avl_insert(&list->avl, &node->avl)) {
+ ptr = ((char *) node - list->node_offset);
+ free(ptr);
+ }
+ }
+}
+
+void
+blobmsg_list_free(struct blobmsg_list *list)
+{
+ struct blobmsg_list_node *node, *tmp;
+ void *ptr;
+
+ avl_remove_all_elements(&list->avl, node, avl, tmp) {
+ ptr = ((char *) node - list->node_offset);
+ free(ptr);
+ }
+}
+
+bool
+blobmsg_list_equal(struct blobmsg_list *l1, struct blobmsg_list *l2)
+{
+ struct blobmsg_list_node *n1, *n2;
+ int count = l1->avl.count;
+
+ if (count != l2->avl.count)
+ return false;
+
+ n1 = avl_first_element(&l1->avl, n1, avl);
+ n2 = avl_first_element(&l2->avl, n2, avl);
+
+ while (count-- > 0) {
+ int len;
+
+ len = blob_len(n1->data);
+ if (len != blob_len(n2->data))
+ return false;
+
+ if (memcmp(n1->data, n2->data, len) != 0)
+ return false;
+
+ if (l1->cmp && !l1->cmp(n1, n2))
+ return false;
+
+ if (!count)
+ break;
+
+ n1 = avl_next_element(n1, avl);
+ n2 = avl_next_element(n2, avl);
+ }
+
+ return true;
+}
diff --git a/utils/utils.h b/utils/utils.h
new file mode 100644
index 0000000..37fa216
--- /dev/null
+++ b/utils/utils.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __PROCD_UTILS_H
+#define __PROCD_UTILS_H
+
+#include <libubox/avl.h>
+#include <libubox/blob.h>
+#include <libubox/blobmsg.h>
+
+struct blobmsg_list_node {
+ struct avl_node avl;
+ struct blob_attr *data;
+};
+
+typedef bool (*blobmsg_list_cmp)(struct blobmsg_list_node *l1, struct blobmsg_list_node *l2);
+typedef void (*blobmsg_update_cb)(struct blobmsg_list_node *n);
+
+struct blobmsg_list {
+ struct avl_tree avl;
+ int node_offset;
+ int node_len;
+
+ blobmsg_list_cmp cmp;
+};
+
+#define blobmsg_list_simple_init(list) \
+ __blobmsg_list_init(list, 0, sizeof(struct blobmsg_list_node), NULL)
+
+#define blobmsg_list_init(list, type, field, cmp) \
+ __blobmsg_list_init(list, offsetof(type, field), sizeof(type), cmp)
+
+#define blobmsg_list_for_each(list, element) \
+ avl_for_each_element(&(list)->avl, element, avl)
+
+void __blobmsg_list_init(struct blobmsg_list *list, int offset, int len, blobmsg_list_cmp cmp);
+int blobmsg_list_fill(struct blobmsg_list *list, void *data, int len, bool array);
+void blobmsg_list_free(struct blobmsg_list *list);
+bool blobmsg_list_equal(struct blobmsg_list *l1, struct blobmsg_list *l2);
+void blobmsg_list_move(struct blobmsg_list *list, struct blobmsg_list *src);
+
+#endif