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profanity/src/common.c

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/*
* common.c
*
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* Copyright (C) 2012, 2013 James Booth <boothj5@gmail.com>
*
* This file is part of Profanity.
*
* Profanity is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Profanity 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 General Public License
* along with Profanity. If not, see <http://www.gnu.org/licenses/>.
*
*/
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#include "config.h"
#include <assert.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <curl/curl.h>
#include <curl/easy.h>
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#include <glib.h>
#include "common.h"
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// assume malloc stores at most 8 bytes for size of allocated memory
// and page size is at least 4KB
#define READ_BUF_SIZE 4088
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struct curl_data_t
{
char *buffer;
size_t size;
};
static size_t _data_callback(void *ptr, size_t size, size_t nmemb, void *data);
// taken from glib 2.30.3
gchar *
p_utf8_substring(const gchar *str, glong start_pos, glong end_pos)
{
gchar *start, *end, *out;
start = g_utf8_offset_to_pointer (str, start_pos);
end = g_utf8_offset_to_pointer (start, end_pos - start_pos);
out = g_malloc (end - start + 1);
memcpy (out, start, end - start);
out[end - start] = 0;
return out;
}
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// backwards compatibility for GLib version < 2.28
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void
p_slist_free_full(GSList *items, GDestroyNotify free_func)
{
g_slist_foreach (items, (GFunc) free_func, NULL);
g_slist_free (items);
}
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void
create_dir(char *name)
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{
int e;
struct stat sb;
e = stat(name, &sb);
if (e != 0)
if (errno == ENOENT)
e = mkdir(name, S_IRWXU);
}
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void
mkdir_recursive(const char *dir)
{
int i;
for (i = 1; i <= strlen(dir); i++) {
if (dir[i] == '/' || dir[i] == '\0') {
gchar *next_dir = g_strndup(dir, i);
create_dir(next_dir);
g_free(next_dir);
}
}
}
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char *
str_replace(const char *string, const char *substr,
const char *replacement)
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{
char *tok = NULL;
char *newstr = NULL;
char *oldstr = NULL;
char *head = NULL;
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if (string == NULL)
return NULL;
if ( substr == NULL ||
replacement == NULL ||
(strcmp(substr, "") == 0))
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return strdup (string);
newstr = strdup (string);
head = newstr;
while ( (tok = strstr ( head, substr ))) {
oldstr = newstr;
newstr = malloc ( strlen ( oldstr ) - strlen ( substr ) +
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strlen ( replacement ) + 1 );
if ( newstr == NULL ) {
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free (oldstr);
return NULL;
}
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memcpy ( newstr, oldstr, tok - oldstr );
memcpy ( newstr + (tok - oldstr), replacement, strlen ( replacement ) );
memcpy ( newstr + (tok - oldstr) + strlen( replacement ),
tok + strlen ( substr ),
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strlen ( oldstr ) - strlen ( substr ) - ( tok - oldstr ) );
memset ( newstr + strlen ( oldstr ) - strlen ( substr ) +
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strlen ( replacement ) , 0, 1 );
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head = newstr + (tok - oldstr) + strlen( replacement );
free (oldstr);
}
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return newstr;
}
int
str_contains(char str[], int size, char ch)
{
int i;
for (i = 0; i < size; i++) {
if (str[i] == ch)
return 1;
}
return 0;
}
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char *
encode_xml(const char * const xml)
{
char *coded_msg = str_replace(xml, "&", "&amp;");
char *coded_msg2 = str_replace(coded_msg, "<", "&lt;");
char *coded_msg3 = str_replace(coded_msg2, ">", "&gt;");
free(coded_msg);
free(coded_msg2);
return coded_msg3;
}
char *
prof_getline(FILE *stream)
{
char *buf;
size_t buf_size;
char *result;
char *s = NULL;
size_t s_size = 1;
int need_exit = 0;
buf = (char *)malloc(READ_BUF_SIZE);
while (TRUE) {
result = fgets(buf, READ_BUF_SIZE, stream);
if (result == NULL)
break;
buf_size = strlen(buf);
if (buf[buf_size - 1] == '\n') {
buf_size--;
buf[buf_size] = '\0';
need_exit = 1;
}
result = (char *)realloc(s, s_size + buf_size);
if (result == NULL) {
if (s != NULL) {
free(s);
s = NULL;
}
break;
}
s = result;
memcpy(s + s_size - 1, buf, buf_size);
s_size += buf_size;
s[s_size - 1] = '\0';
if (need_exit != 0 || feof(stream) != 0)
break;
}
free(buf);
return s;
}
int
octet_compare(unsigned char *str1, unsigned char *str2)
{
if ((strcmp((char *)str1, "") == 0) && (strcmp((char *)str2, "") == 0)) {
return 0;
}
if ((strcmp((char *)str1, "") == 0) && (strcmp((char *)str2, "") != 0)) {
return -1;
}
if ((strcmp((char *)str1, "") != 0) && (strcmp((char *)str2, "") == 0)) {
return 1;
}
if (str1[0] == str2[0]) {
return octet_compare(&str1[1], &str2[1]);
}
if (str1[0] < str2[0]) {
return -1;
}
return 1;
}
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char *
release_get_latest()
{
char *url = "http://www.profanity.im/profanity_version.txt";
CURL *handle = curl_easy_init();
struct curl_data_t output;
output.buffer = NULL;
output.size = 0;
curl_easy_setopt(handle, CURLOPT_URL, url);
curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, _data_callback);
curl_easy_setopt(handle, CURLOPT_TIMEOUT, 2);
curl_easy_setopt(handle, CURLOPT_WRITEDATA, (void *)&output);
curl_easy_perform(handle);
curl_easy_cleanup(handle);
if (output.buffer != NULL) {
output.buffer[output.size++] = '\0';
return output.buffer;
} else {
return NULL;
}
}
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gboolean
release_is_new(char *found_version)
{
int curr_maj, curr_min, curr_patch, found_maj, found_min, found_patch;
int parse_curr = sscanf(PACKAGE_VERSION, "%d.%d.%d", &curr_maj, &curr_min,
&curr_patch);
int parse_found = sscanf(found_version, "%d.%d.%d", &found_maj, &found_min,
&found_patch);
if (parse_found == 3 && parse_curr == 3) {
if (found_maj > curr_maj) {
return TRUE;
} else if (found_maj == curr_maj && found_min > curr_min) {
return TRUE;
} else if (found_maj == curr_maj && found_min == curr_min
&& found_patch > curr_patch) {
return TRUE;
} else {
return FALSE;
}
} else {
return FALSE;
}
}
gboolean
valid_resource_presence_string(const char * const str)
{
assert(str != NULL);
if ((strcmp(str, "online") == 0) || (strcmp(str, "chat") == 0) ||
(strcmp(str, "away") == 0) || (strcmp(str, "xa") == 0) ||
(strcmp(str, "dnd") == 0)) {
return TRUE;
} else {
return FALSE;
}
}
const char *
string_from_resource_presence(resource_presence_t presence)
{
switch(presence)
{
case RESOURCE_CHAT:
return "chat";
case RESOURCE_AWAY:
return "away";
case RESOURCE_XA:
return "xa";
case RESOURCE_DND:
return "dnd";
default:
return "online";
}
}
resource_presence_t
resource_presence_from_string(const char * const str)
{
if (str == NULL) {
return RESOURCE_ONLINE;
} else if (strcmp(str, "online") == 0) {
return RESOURCE_ONLINE;
} else if (strcmp(str, "chat") == 0) {
return RESOURCE_CHAT;
} else if (strcmp(str, "away") == 0) {
return RESOURCE_AWAY;
} else if (strcmp(str, "xa") == 0) {
return RESOURCE_XA;
} else if (strcmp(str, "dnd") == 0) {
return RESOURCE_DND;
} else {
return RESOURCE_ONLINE;
}
}
contact_presence_t
contact_presence_from_resource_presence(resource_presence_t resource_presence)
{
switch(resource_presence)
{
case RESOURCE_CHAT:
return CONTACT_CHAT;
case RESOURCE_AWAY:
return CONTACT_AWAY;
case RESOURCE_XA:
return CONTACT_XA;
case RESOURCE_DND:
return CONTACT_DND;
default:
return CONTACT_ONLINE;
}
}
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gchar *
xdg_get_config_home(void)
{
gchar *xdg_config_home = getenv("XDG_CONFIG_HOME");
if (xdg_config_home != NULL)
g_strstrip(xdg_config_home);
if ((xdg_config_home != NULL) && (strcmp(xdg_config_home, "") != 0)) {
return strdup(xdg_config_home);
} else {
GString *default_path = g_string_new(getenv("HOME"));
g_string_append(default_path, "/.config");
gchar *result = strdup(default_path->str);
g_string_free(default_path, TRUE);
return result;
}
}
gchar *
xdg_get_data_home(void)
{
gchar *xdg_data_home = getenv("XDG_DATA_HOME");
if (xdg_data_home != NULL)
g_strstrip(xdg_data_home);
if ((xdg_data_home != NULL) && (strcmp(xdg_data_home, "") != 0)) {
return strdup(xdg_data_home);
} else {
GString *default_path = g_string_new(getenv("HOME"));
g_string_append(default_path, "/.local/share");
gchar *result = strdup(default_path->str);
g_string_free(default_path, TRUE);
return result;
}
}
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static size_t
_data_callback(void *ptr, size_t size, size_t nmemb, void *data)
{
size_t realsize = size * nmemb;
struct curl_data_t *mem = (struct curl_data_t *) data;
mem->buffer = realloc(mem->buffer, mem->size + realsize + 1);
if ( mem->buffer )
{
memcpy( &( mem->buffer[ mem->size ] ), ptr, realsize );
mem->size += realsize;
mem->buffer[ mem->size ] = 0;
}
return realsize;
}