diff options
| -rw-r--r-- | plugins/checksum/checksum.c | 183 |
1 files changed, 49 insertions, 134 deletions
diff --git a/plugins/checksum/checksum.c b/plugins/checksum/checksum.c index 103a80ca..79f64982 100644 --- a/plugins/checksum/checksum.c +++ b/plugins/checksum/checksum.c @@ -1,5 +1,5 @@ /* XChat-WDK - * Copyright (c) 2010-2011 Berke Viktor. + * Copyright (c) 2010-2012 Berke Viktor. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal @@ -31,8 +31,7 @@ #include "xchat-plugin.h" #define BUFSIZE 32768 -#define DEFAULT_MAX_HASH_SIZE 268435456 /* default size is 256 MB */ -#define FILE_BUF_SIZE 512 +#define DEFAULT_LIMIT 256 /* default size is 256 MiB */ #ifndef snprintf #define snprintf _snprintf @@ -44,8 +43,7 @@ static xchat_plugin *ph; /* plugin handle */ static const char name[] = "Checksum"; static const char desc[] = "Calculate checksum for DCC file transfers"; -static const char version[] = "2.0"; -static int config_fail; /* variable for config availability */ +static const char version[] = "3.0"; /* Use of OpenSSL SHA256 interface: http://adamlamers.com/?p=5 */ static void @@ -114,135 +112,46 @@ sha256_file (char *path, char outputBuffer[65]) } static void -init () +set_limit (char* size) { - /* check whether the config file exists, if it doesn't, try to create it */ - FILE * file_in; - FILE * file_out; - char buffer[FILE_BUF_SIZE]; + int buffer = atoi (size); - config_fail = 0; - snprintf (buffer, sizeof (buffer), "%s/checksum.conf", xchat_get_info (ph, "xchatdirfs")); - - if ((file_in = fopen (buffer, "r")) == NULL) + if (buffer > 0 && buffer < INT_MAX) { - if ((file_out = fopen (buffer, "w")) == NULL) + if (xchat_pluginpref_set_int (ph, "limit", buffer)) { - config_fail = 1; - } else + xchat_printf (ph, "File size limit has successfully been set to: %d MiB\n", buffer); + } + else { - fprintf (file_out, "%llu\n", (unsigned long long) DEFAULT_MAX_HASH_SIZE); - fclose (file_out); + xchat_printf (ph, "File access error while saving!\n"); } - } else - { - fclose (file_in); - } - - /* nasty easter egg: if FILE_BUF_SIZE is set to 1024 and you build for x86, you can do fclose () - at the end of init (), which is plain wrong as it will only work if fopen () != 0. */ -} - -static unsigned long long -get_max_hash_size () -{ - FILE * file_in; - char buffer[FILE_BUF_SIZE]; - unsigned long long max_hash_size; - - if (config_fail) - { - return (unsigned long long) DEFAULT_MAX_HASH_SIZE; - } else - { - snprintf (buffer, sizeof (buffer), "%s/checksum.conf", xchat_get_info (ph, "xchatdirfs")); - file_in = fopen (buffer, "r"); - fscanf (file_in, "%llu", &max_hash_size); - - fclose (file_in); - return max_hash_size; } -} - -static void -print_size () -{ - unsigned long long size; - char suffix[3]; - - size = get_max_hash_size (); - - if (size >= 1073741824) - { - size /= 1073741824; - snprintf (suffix, sizeof (suffix), "GB"); - } else if (size >= 1048576) - { - size /= 1048576; - snprintf (suffix, sizeof (suffix), "MB"); - } else if (size >= 1024) + else { - size /= 1024; - snprintf (suffix, sizeof (suffix), "kB"); - } else - { - snprintf (suffix, sizeof (suffix), "B"); + xchat_printf (ph, "Invalid input!\n"); } - xchat_printf (ph, "File size limit for checksums: %llu %s\n", size, suffix); } -static void -increase_max_hash_size () +static int +get_limit () { - unsigned long long size; - FILE * file_out; - char buffer[FILE_BUF_SIZE]; + int size = xchat_pluginpref_get_int (ph, "limit"); - if (config_fail) + if (size <= -1 || size >= INT_MAX) { - xchat_printf (ph, "Config file is unavailable, falling back to the default value\n"); - print_size (); - } else + return DEFAULT_LIMIT; + } + else { - size = get_max_hash_size (); - if (size <= ULLONG_MAX/2) - { - size *= 2; - } - - snprintf (buffer, sizeof (buffer), "%s/checksum.conf", xchat_get_info (ph, "xchatdirfs")); - file_out = fopen (buffer, "w"); - fprintf (file_out, "%llu\n", size); - fclose (file_out); - print_size (); + return size; } } static void -decrease_max_hash_size () +print_limit () { - unsigned long long size; - FILE * file_out; - char buffer[FILE_BUF_SIZE]; - - if (config_fail) - { - xchat_printf (ph, "Config file is unavailable, falling back to the default value\n"); - print_size (); - } else - { - size = get_max_hash_size (); - if (size >= 2) - { - size /= 2; - } - - snprintf (buffer, sizeof (buffer), "%s/checksum.conf", xchat_get_info (ph, "xchatdirfs")); - file_out = fopen (buffer, "w"); - fprintf (file_out, "%llu\n", size); - fclose (file_out); - print_size (); - } + xchat_printf (ph, "File size limit for checksums: %d MiB", get_limit ()); } static int @@ -255,20 +164,22 @@ dccrecv_cb (char *word[], void *userdata) result = stat64 (word[2], &buffer); if (result == 0) /* stat returns 0 on success */ { - if (buffer.st_size <= get_max_hash_size ()) + if (buffer.st_size <= (unsigned long long) get_limit () * 1048576) { sha256_file (word[2], sum); /* word[2] is the full filename */ /* try to print the checksum in the privmsg tab of the sender */ xchat_set_context (ph, xchat_find_context (ph, NULL, word[3])); xchat_printf (ph, "SHA-256 checksum for %s (local): %s\n", word[1], sum); - } else + } + else { xchat_set_context (ph, xchat_find_context (ph, NULL, word[3])); xchat_printf (ph, "SHA-256 checksum for %s (local): (size limit reached, no checksum calculated, you can increase it with /CHECKSUM INC)\n", word[1]); } - } else + } + else { - xchat_printf (ph, "File access error\n"); + xchat_printf (ph, "File access error!\n"); } return XCHAT_EAT_NONE; @@ -284,18 +195,20 @@ dccoffer_cb (char *word[], void *userdata) result = stat64 (word[3], &buffer); if (result == 0) /* stat returns 0 on success */ { - if (buffer.st_size <= get_max_hash_size ()) + if (buffer.st_size <= (unsigned long long) get_limit () * 1048576) { sha256_file (word[3], sum); /* word[3] is the full filename */ xchat_commandf (ph, "quote PRIVMSG %s :SHA-256 checksum for %s (remote): %s", word[2], word[1], sum); - } else + } + else { xchat_set_context (ph, xchat_find_context (ph, NULL, word[3])); xchat_printf (ph, "quote PRIVMSG %s :SHA-256 checksum for %s (remote): (size limit reached, no checksum calculated)", word[2], word[1]); } - } else + } + else { - xchat_printf (ph, "File access error\n"); + xchat_printf (ph, "File access error!\n"); } return XCHAT_EAT_NONE; @@ -306,19 +219,17 @@ checksum (char *word[], void *userdata) { if (!stricmp ("GET", word[2])) { - print_size (); - } else if (!stricmp ("INC", word[2])) - { - increase_max_hash_size (); - } else if (!stricmp ("DEC", word[2])) + print_limit (); + } + else if (!stricmp ("SET", word[2])) { - decrease_max_hash_size (); - } else + set_limit (word[3]); + } + else { xchat_printf (ph, "Usage: /CHECKSUM GET|INC|DEC\n"); - xchat_printf (ph, " GET - print the maximum file size to be hashed\n"); - xchat_printf (ph, " INC - double the maximum file size to be hashed\n"); - xchat_printf (ph, " DEC - halve the maximum file size to be hashed\n"); + xchat_printf (ph, " GET - print the maximum file size (in MiB) to be hashed\n"); + xchat_printf (ph, " SET <filesize> - set the maximum file size (in MiB) to be hashed\n"); } } @@ -331,9 +242,13 @@ xchat_plugin_init (xchat_plugin *plugin_handle, char **plugin_name, char **plugi *plugin_desc = desc; *plugin_version = version; - init (); + /* this is required for the very first run */ + if (xchat_pluginpref_get_int (ph, "limit") == -1) + { + xchat_pluginpref_set_int (ph, "limit", DEFAULT_LIMIT); + } - xchat_hook_command (ph, "CHECKSUM", XCHAT_PRI_NORM, checksum, "Usage: /CHECKSUM GET|INC|DEC", 0); + xchat_hook_command (ph, "CHECKSUM", XCHAT_PRI_NORM, checksum, "Usage: /CHECKSUM GET|SET", 0); xchat_hook_print (ph, "DCC RECV Complete", XCHAT_PRI_NORM, dccrecv_cb, NULL); xchat_hook_print (ph, "DCC Offer", XCHAT_PRI_NORM, dccoffer_cb, NULL); |