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-rw-r--r--src/utils.c324
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diff --git a/src/utils.c b/src/utils.c
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-/*
- * utils.c
- *
- * Copyright (C) 2009 Hector Martin <hector@marcansoft.com>
- * Copyright (C) 2009 Nikias Bassen <nikias@gmx.li>
- * Copyright (c) 2013 Federico Mena Quintero
- *
- * This library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as
- * published by the Free Software Foundation, either version 2.1 of the
- * License, or (at your option) any later version.
- *
- * This library 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.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <time.h>
-#include <sys/time.h>
-
-#include "utils.h"
-
-#include "log.h"
-#define util_error(...) usbmuxd_log(LL_ERROR, __VA_ARGS__)
-
-void fdlist_create(struct fdlist *list)
-{
- list->count = 0;
- list->capacity = 4;
- list->owners = malloc(sizeof(*list->owners) * list->capacity);
- list->fds = malloc(sizeof(*list->fds) * list->capacity);
-}
-void fdlist_add(struct fdlist *list, enum fdowner owner, int fd, short events)
-{
- if(list->count == list->capacity) {
- list->capacity *= 2;
- list->owners = realloc(list->owners, sizeof(*list->owners) * list->capacity);
- list->fds = realloc(list->fds, sizeof(*list->fds) * list->capacity);
- }
- list->owners[list->count] = owner;
- list->fds[list->count].fd = fd;
- list->fds[list->count].events = events;
- list->fds[list->count].revents = 0;
- list->count++;
-}
-
-void fdlist_free(struct fdlist *list)
-{
- list->count = 0;
- list->capacity = 0;
- free(list->owners);
- list->owners = NULL;
- free(list->fds);
- list->fds = NULL;
-}
-
-void fdlist_reset(struct fdlist *list)
-{
- list->count = 0;
-}
-
-#define CAPACITY_STEP 8
-
-void collection_init(struct collection *col)
-{
- col->list = malloc(sizeof(void *) * CAPACITY_STEP);
- memset(col->list, 0, sizeof(void *) * CAPACITY_STEP);
- col->capacity = CAPACITY_STEP;
-}
-
-void collection_free(struct collection *col)
-{
- free(col->list);
- col->list = NULL;
- col->capacity = 0;
-}
-
-void collection_add(struct collection *col, void *element)
-{
- int i;
- for(i=0; i<col->capacity; i++) {
- if(!col->list[i]) {
- col->list[i] = element;
- return;
- }
- }
- col->list = realloc(col->list, sizeof(void*) * (col->capacity + CAPACITY_STEP));
- memset(&col->list[col->capacity], 0, sizeof(void *) * CAPACITY_STEP);
- col->list[col->capacity] = element;
- col->capacity += CAPACITY_STEP;
-}
-
-void collection_remove(struct collection *col, void *element)
-{
- int i;
- for(i=0; i<col->capacity; i++) {
- if(col->list[i] == element) {
- col->list[i] = NULL;
- return;
- }
- }
- util_error("collection_remove: element %p not present in collection %p (cap %d)", element, col, col->capacity);
-}
-
-int collection_count(struct collection *col)
-{
- int i, cnt = 0;
- for(i=0; i<col->capacity; i++) {
- if(col->list[i])
- cnt++;
- }
- return cnt;
-}
-
-void collection_copy(struct collection *dest, struct collection *src)
-{
- if (!dest || !src) return;
- dest->capacity = src->capacity;
- dest->list = malloc(sizeof(void*) * src->capacity);
- memcpy(dest->list, src->list, sizeof(void*) * src->capacity);
-}
-
-#ifndef HAVE_STPCPY
-/**
- * Copy characters from one string into another
- *
- * @note: The strings should not overlap, as the behavior is undefined.
- *
- * @s1: The source string.
- * @s2: The destination string.
- *
- * @return a pointer to the terminating `\0' character of @s1,
- * or NULL if @s1 or @s2 is NULL.
- */
-char *stpcpy(char * s1, const char * s2)
-{
- if (s1 == NULL || s2 == NULL)
- return NULL;
-
- strcpy(s1, s2);
-
- return s1 + strlen(s2);
-}
-#endif
-
-/**
- * Concatenate strings into a newly allocated string
- *
- * @note: Specify NULL for the last string in the varargs list
- *
- * @str: The first string in the list
- * @...: Subsequent strings. Use NULL for the last item.
- *
- * @return a newly allocated string, or NULL if @str is NULL. This will also
- * return NULL and set errno to ENOMEM if memory is exhausted.
- */
-char *string_concat(const char *str, ...)
-{
- size_t len;
- va_list args;
- char *s;
- char *result;
- char *dest;
-
- if (!str)
- return NULL;
-
- /* Compute final length */
-
- len = strlen(str) + 1; /* plus 1 for the null terminator */
-
- va_start(args, str);
- s = va_arg(args, char *);
- while (s) {
- len += strlen(s);
- s = va_arg(args, char*);
- }
- va_end(args);
-
- /* Concat each string */
-
- result = malloc(len);
- if (!result)
- return NULL; /* errno remains set */
-
- dest = result;
-
- dest = stpcpy(dest, str);
-
- va_start(args, str);
- s = va_arg(args, char *);
- while (s) {
- dest = stpcpy(dest, s);
- s = va_arg(args, char *);
- }
- va_end(args);
-
- return result;
-}
-
-void buffer_read_from_filename(const char *filename, char **buffer, uint64_t *length)
-{
- FILE *f;
- uint64_t size;
-
- *length = 0;
-
- f = fopen(filename, "rb");
- if (!f) {
- return;
- }
-
- fseek(f, 0, SEEK_END);
- size = ftell(f);
- rewind(f);
-
- if (size == 0) {
- fclose(f);
- return;
- }
-
- *buffer = (char*)malloc(sizeof(char)*(size+1));
- if (fread(*buffer, sizeof(char), size, f) != size) {
- usbmuxd_log(LL_ERROR, "%s: ERROR: couldn't read %d bytes from %s", __func__, (int)size, filename);
- }
- fclose(f);
-
- *length = size;
-}
-
-void buffer_write_to_filename(const char *filename, const char *buffer, uint64_t length)
-{
- FILE *f;
-
- f = fopen(filename, "wb");
- if (f) {
- fwrite(buffer, sizeof(char), length, f);
- fclose(f);
- }
-}
-
-int plist_read_from_filename(plist_t *plist, const char *filename)
-{
- char *buffer = NULL;
- uint64_t length;
-
- if (!filename)
- return 0;
-
- buffer_read_from_filename(filename, &buffer, &length);
-
- if (!buffer) {
- return 0;
- }
-
- if ((length > 8) && (memcmp(buffer, "bplist00", 8) == 0)) {
- plist_from_bin(buffer, length, plist);
- } else {
- plist_from_xml(buffer, length, plist);
- }
-
- free(buffer);
-
- return 1;
-}
-
-int plist_write_to_filename(plist_t plist, const char *filename, enum plist_format_t format)
-{
- char *buffer = NULL;
- uint32_t length;
-
- if (!plist || !filename)
- return 0;
-
- if (format == PLIST_FORMAT_XML)
- plist_to_xml(plist, &buffer, &length);
- else if (format == PLIST_FORMAT_BINARY)
- plist_to_bin(plist, &buffer, &length);
- else
- return 0;
-
- buffer_write_to_filename(filename, buffer, length);
-
- free(buffer);
-
- return 1;
-}
-
-void get_tick_count(struct timeval * tv)
-{
- struct timespec ts;
- if(0 == clock_gettime(CLOCK_MONOTONIC, &ts)) {
- tv->tv_sec = ts.tv_sec;
- tv->tv_usec = ts.tv_nsec / 1000;
- } else {
- gettimeofday(tv, NULL);
- }
-}
-
-/**
- * Get number of milliseconds since the epoch.
- */
-uint64_t mstime64(void)
-{
- struct timeval tv;
- get_tick_count(&tv);
-
- // Careful, avoid overflow on 32 bit systems
- // time_t could be 4 bytes
- return ((long long)tv.tv_sec) * 1000LL + ((long long)tv.tv_usec) / 1000LL;
-}
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