update the checksum plugin to use the plugin config api
This commit is contained in:
Berke Viktor
parent
a850ae6e4d
commit
83b6f548ad
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@ -1,5 +1,5 @@
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/* XChat-WDK
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* Copyright (c) 2010-2011 Berke Viktor.
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* Copyright (c) 2010-2012 Berke Viktor.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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@ -31,8 +31,7 @@
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#include "xchat-plugin.h"
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#define BUFSIZE 32768
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#define DEFAULT_MAX_HASH_SIZE 268435456 /* default size is 256 MB */
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#define FILE_BUF_SIZE 512
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#define DEFAULT_LIMIT 256 /* default size is 256 MiB */
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#ifndef snprintf
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#define snprintf _snprintf
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@ -44,8 +43,7 @@
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static xchat_plugin *ph; /* plugin handle */
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static const char name[] = "Checksum";
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static const char desc[] = "Calculate checksum for DCC file transfers";
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static const char version[] = "2.0";
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static int config_fail; /* variable for config availability */
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static const char version[] = "3.0";
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/* Use of OpenSSL SHA256 interface: http://adamlamers.com/?p=5 */
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static void
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@ -114,135 +112,46 @@ sha256_file (char *path, char outputBuffer[65])
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}
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static void
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init ()
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set_limit (char* size)
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{
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/* check whether the config file exists, if it doesn't, try to create it */
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FILE * file_in;
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FILE * file_out;
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char buffer[FILE_BUF_SIZE];
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int buffer = atoi (size);
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config_fail = 0;
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snprintf (buffer, sizeof (buffer), "%s/checksum.conf", xchat_get_info (ph, "xchatdirfs"));
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if ((file_in = fopen (buffer, "r")) == NULL)
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if (buffer > 0 && buffer < INT_MAX)
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{
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if ((file_out = fopen (buffer, "w")) == NULL)
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if (xchat_pluginpref_set_int (ph, "limit", buffer))
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{
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config_fail = 1;
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} else
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{
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fprintf (file_out, "%llu\n", (unsigned long long) DEFAULT_MAX_HASH_SIZE);
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fclose (file_out);
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xchat_printf (ph, "File size limit has successfully been set to: %d MiB\n", buffer);
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}
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else
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{
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xchat_printf (ph, "File access error while saving!\n");
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}
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} else
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{
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fclose (file_in);
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}
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/* nasty easter egg: if FILE_BUF_SIZE is set to 1024 and you build for x86, you can do fclose ()
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at the end of init (), which is plain wrong as it will only work if fopen () != 0. */
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else
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{
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xchat_printf (ph, "Invalid input!\n");
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}
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}
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static unsigned long long
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get_max_hash_size ()
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static int
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get_limit ()
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{
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FILE * file_in;
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char buffer[FILE_BUF_SIZE];
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unsigned long long max_hash_size;
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int size = xchat_pluginpref_get_int (ph, "limit");
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if (config_fail)
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if (size <= -1 || size >= INT_MAX)
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{
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return (unsigned long long) DEFAULT_MAX_HASH_SIZE;
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} else
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return DEFAULT_LIMIT;
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}
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else
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{
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snprintf (buffer, sizeof (buffer), "%s/checksum.conf", xchat_get_info (ph, "xchatdirfs"));
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file_in = fopen (buffer, "r");
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fscanf (file_in, "%llu", &max_hash_size);
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fclose (file_in);
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return max_hash_size;
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return size;
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}
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}
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static void
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print_size ()
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print_limit ()
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{
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unsigned long long size;
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char suffix[3];
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size = get_max_hash_size ();
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if (size >= 1073741824)
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{
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size /= 1073741824;
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snprintf (suffix, sizeof (suffix), "GB");
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} else if (size >= 1048576)
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{
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size /= 1048576;
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snprintf (suffix, sizeof (suffix), "MB");
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} else if (size >= 1024)
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{
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size /= 1024;
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snprintf (suffix, sizeof (suffix), "kB");
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} else
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{
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snprintf (suffix, sizeof (suffix), "B");
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}
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xchat_printf (ph, "File size limit for checksums: %llu %s\n", size, suffix);
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}
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static void
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increase_max_hash_size ()
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{
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unsigned long long size;
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FILE * file_out;
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char buffer[FILE_BUF_SIZE];
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if (config_fail)
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{
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xchat_printf (ph, "Config file is unavailable, falling back to the default value\n");
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print_size ();
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} else
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{
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size = get_max_hash_size ();
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if (size <= ULLONG_MAX/2)
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{
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size *= 2;
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}
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snprintf (buffer, sizeof (buffer), "%s/checksum.conf", xchat_get_info (ph, "xchatdirfs"));
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file_out = fopen (buffer, "w");
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fprintf (file_out, "%llu\n", size);
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fclose (file_out);
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print_size ();
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}
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}
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static void
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decrease_max_hash_size ()
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{
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unsigned long long size;
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FILE * file_out;
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char buffer[FILE_BUF_SIZE];
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if (config_fail)
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{
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xchat_printf (ph, "Config file is unavailable, falling back to the default value\n");
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print_size ();
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} else
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{
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size = get_max_hash_size ();
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if (size >= 2)
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{
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size /= 2;
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}
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snprintf (buffer, sizeof (buffer), "%s/checksum.conf", xchat_get_info (ph, "xchatdirfs"));
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file_out = fopen (buffer, "w");
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fprintf (file_out, "%llu\n", size);
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fclose (file_out);
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print_size ();
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}
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xchat_printf (ph, "File size limit for checksums: %d MiB", get_limit ());
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}
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static int
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@ -255,20 +164,22 @@ dccrecv_cb (char *word[], void *userdata)
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result = stat64 (word[2], &buffer);
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if (result == 0) /* stat returns 0 on success */
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{
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if (buffer.st_size <= get_max_hash_size ())
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if (buffer.st_size <= (unsigned long long) get_limit () * 1048576)
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{
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sha256_file (word[2], sum); /* word[2] is the full filename */
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/* try to print the checksum in the privmsg tab of the sender */
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xchat_set_context (ph, xchat_find_context (ph, NULL, word[3]));
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xchat_printf (ph, "SHA-256 checksum for %s (local): %s\n", word[1], sum);
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} else
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}
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else
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{
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xchat_set_context (ph, xchat_find_context (ph, NULL, word[3]));
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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]);
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}
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} else
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}
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else
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{
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xchat_printf (ph, "File access error\n");
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xchat_printf (ph, "File access error!\n");
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}
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return XCHAT_EAT_NONE;
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@ -284,18 +195,20 @@ dccoffer_cb (char *word[], void *userdata)
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result = stat64 (word[3], &buffer);
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if (result == 0) /* stat returns 0 on success */
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{
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if (buffer.st_size <= get_max_hash_size ())
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if (buffer.st_size <= (unsigned long long) get_limit () * 1048576)
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{
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sha256_file (word[3], sum); /* word[3] is the full filename */
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xchat_commandf (ph, "quote PRIVMSG %s :SHA-256 checksum for %s (remote): %s", word[2], word[1], sum);
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} else
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}
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else
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{
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xchat_set_context (ph, xchat_find_context (ph, NULL, word[3]));
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xchat_printf (ph, "quote PRIVMSG %s :SHA-256 checksum for %s (remote): (size limit reached, no checksum calculated)", word[2], word[1]);
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}
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} else
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}
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else
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{
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xchat_printf (ph, "File access error\n");
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xchat_printf (ph, "File access error!\n");
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}
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return XCHAT_EAT_NONE;
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@ -306,19 +219,17 @@ checksum (char *word[], void *userdata)
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{
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if (!stricmp ("GET", word[2]))
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{
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print_size ();
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} else if (!stricmp ("INC", word[2]))
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print_limit ();
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}
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else if (!stricmp ("SET", word[2]))
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{
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increase_max_hash_size ();
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} else if (!stricmp ("DEC", word[2]))
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{
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decrease_max_hash_size ();
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} else
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set_limit (word[3]);
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}
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else
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{
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xchat_printf (ph, "Usage: /CHECKSUM GET|INC|DEC\n");
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xchat_printf (ph, " GET - print the maximum file size to be hashed\n");
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xchat_printf (ph, " INC - double the maximum file size to be hashed\n");
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xchat_printf (ph, " DEC - halve the maximum file size to be hashed\n");
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xchat_printf (ph, " GET - print the maximum file size (in MiB) to be hashed\n");
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xchat_printf (ph, " SET <filesize> - set the maximum file size (in MiB) to be hashed\n");
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}
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}
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@ -331,9 +242,13 @@ xchat_plugin_init (xchat_plugin *plugin_handle, char **plugin_name, char **plugi
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*plugin_desc = desc;
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*plugin_version = version;
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init ();
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/* this is required for the very first run */
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if (xchat_pluginpref_get_int (ph, "limit") == -1)
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{
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xchat_pluginpref_set_int (ph, "limit", DEFAULT_LIMIT);
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}
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xchat_hook_command (ph, "CHECKSUM", XCHAT_PRI_NORM, checksum, "Usage: /CHECKSUM GET|INC|DEC", 0);
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xchat_hook_command (ph, "CHECKSUM", XCHAT_PRI_NORM, checksum, "Usage: /CHECKSUM GET|SET", 0);
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xchat_hook_print (ph, "DCC RECV Complete", XCHAT_PRI_NORM, dccrecv_cb, NULL);
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xchat_hook_print (ph, "DCC Offer", XCHAT_PRI_NORM, dccoffer_cb, NULL);
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