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Annotation of embedaddon/bmon/src/bindings.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * bindings.c       Key Bindings
        !             3:  *
        !             4:  * Copyright (c) 2001-2005 Thomas Graf <tgraf@suug.ch>
        !             5:  *
        !             6:  * Permission is hereby granted, free of charge, to any person obtaining a
        !             7:  * copy of this software and associated documentation files (the "Software"),
        !             8:  * to deal in the Software without restriction, including without limitation
        !             9:  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
        !            10:  * and/or sell copies of the Software, and to permit persons to whom the
        !            11:  * Software is furnished to do so, subject to the following conditions:
        !            12:  *
        !            13:  * The above copyright notice and this permission notice shall be included
        !            14:  * in all copies or substantial portions of the Software.
        !            15:  *
        !            16:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
        !            17:  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
        !            19:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
        !            20:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
        !            21:  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
        !            22:  * DEALINGS IN THE SOFTWARE.
        !            23:  */
        !            24: 
        !            25: #include <bmon/bmon.h>
        !            26: #include <bmon/bindings.h>
        !            27: #include <bmon/utils.h>
        !            28: 
        !            29: static binding_t *bindings;
        !            30: 
        !            31: void add_binding(binding_t *b)
        !            32: {
        !            33:        b->next = bindings;
        !            34:        bindings = b;
        !            35: }
        !            36: 
        !            37: static void run_binding(binding_t *b, const char *args_)
        !            38: {
        !            39:        pid_t pid;
        !            40:        int i, n;
        !            41:        char *s, *args = strdup(args_);
        !            42: 
        !            43:        for (i = 1; b->args[i]; i++);
        !            44:        n = i;
        !            45:        
        !            46:        if (i < 255)
        !            47:        b->args[i++] = args;
        !            48:        
        !            49:        for (s = args; i < 255; i++) {
        !            50:                s = strchr (s, ' ');
        !            51:                if (s) {
        !            52:                        *s = '\0';
        !            53:                        s++;
        !            54:                        b->args[i] = s;
        !            55:                } else
        !            56:                        break;
        !            57:        }
        !            58: 
        !            59:        b->args[i] = NULL;
        !            60: 
        !            61:        pid = fork();
        !            62:        if (pid < 0)
        !            63:                quit("fork error: %s\n", strerror(errno));
        !            64:        else if (pid) {
        !            65:                /* parent */
        !            66:                b->args[n] = NULL;
        !            67:                return;
        !            68:        }
        !            69:        
        !            70:        /* child */
        !            71: 
        !            72: #ifdef HAVE_FCLOSEALL
        !            73:        fcloseall();
        !            74: #else
        !            75:        for (i = 0; i < 256; i++)
        !            76:                close(i);
        !            77: #endif
        !            78:        
        !            79:        if (execve(b->cmd, b->args, NULL) < 0)
        !            80:                quit("execve failed: %s\n", strerror(errno));
        !            81:        
        !            82:        /* this is only needed in case execve fails */
        !            83:        _exit(0);
        !            84: }
        !            85: 
        !            86: int handle_bindings(int ch, const char *args)
        !            87: {
        !            88:        binding_t *b;
        !            89: 
        !            90:        for (b = bindings; b; b = b->next) {
        !            91:                if (ch == b->ch) {
        !            92:                        run_binding(b, args);
        !            93:                        return 1;
        !            94:                }
        !            95:        }
        !            96: 
        !            97:        return 0;
        !            98: }