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Annotation of embedaddon/tmux/cmd-run-shell.c, revision 1.1

1.1     ! misho       1: /* $OpenBSD$ */
        !             2: 
        !             3: /*
        !             4:  * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
        !             5:  * Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
        !             6:  *
        !             7:  * Permission to use, copy, modify, and distribute this software for any
        !             8:  * purpose with or without fee is hereby granted, provided that the above
        !             9:  * copyright notice and this permission notice appear in all copies.
        !            10:  *
        !            11:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            12:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            13:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            14:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            15:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
        !            16:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
        !            17:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            18:  */
        !            19: 
        !            20: #include <sys/types.h>
        !            21: #include <sys/wait.h>
        !            22: 
        !            23: #include <stdlib.h>
        !            24: #include <string.h>
        !            25: 
        !            26: #include "tmux.h"
        !            27: 
        !            28: /*
        !            29:  * Runs a command without a window.
        !            30:  */
        !            31: 
        !            32: static enum cmd_retval cmd_run_shell_exec(struct cmd *, struct cmdq_item *);
        !            33: 
        !            34: static void    cmd_run_shell_callback(struct job *);
        !            35: static void    cmd_run_shell_free(void *);
        !            36: static void    cmd_run_shell_print(struct job *, const char *);
        !            37: 
        !            38: const struct cmd_entry cmd_run_shell_entry = {
        !            39:        .name = "run-shell",
        !            40:        .alias = "run",
        !            41: 
        !            42:        .args = { "bt:", 1, 1 },
        !            43:        .usage = "[-b] " CMD_TARGET_PANE_USAGE " shell-command",
        !            44: 
        !            45:        .tflag = CMD_PANE_CANFAIL,
        !            46: 
        !            47:        .flags = 0,
        !            48:        .exec = cmd_run_shell_exec
        !            49: };
        !            50: 
        !            51: struct cmd_run_shell_data {
        !            52:        char                    *cmd;
        !            53:        struct cmdq_item        *item;
        !            54:        int                      wp_id;
        !            55: };
        !            56: 
        !            57: static void
        !            58: cmd_run_shell_print(struct job *job, const char *msg)
        !            59: {
        !            60:        struct cmd_run_shell_data       *cdata = job->data;
        !            61:        struct window_pane              *wp = NULL;
        !            62:        struct cmd_find_state            fs;
        !            63: 
        !            64:        if (cdata->wp_id != -1)
        !            65:                wp = window_pane_find_by_id(cdata->wp_id);
        !            66:        if (wp == NULL) {
        !            67:                if (cdata->item != NULL) {
        !            68:                        cmdq_print(cdata->item, "%s", msg);
        !            69:                        return;
        !            70:                }
        !            71:                if (cmd_find_current (&fs, NULL, CMD_FIND_QUIET) != 0)
        !            72:                        return;
        !            73:                wp = fs.wp;
        !            74:                if (wp == NULL)
        !            75:                        return;
        !            76:        }
        !            77: 
        !            78:        if (window_pane_set_mode(wp, &window_copy_mode) == 0)
        !            79:                window_copy_init_for_output(wp);
        !            80:        if (wp->mode == &window_copy_mode)
        !            81:                window_copy_add(wp, "%s", msg);
        !            82: }
        !            83: 
        !            84: static enum cmd_retval
        !            85: cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item)
        !            86: {
        !            87:        struct args                     *args = self->args;
        !            88:        struct cmd_run_shell_data       *cdata;
        !            89:        struct client                   *c = item->state.c;
        !            90:        struct session                  *s = item->state.tflag.s;
        !            91:        struct winlink                  *wl = item->state.tflag.wl;
        !            92:        struct window_pane              *wp = item->state.tflag.wp;
        !            93:        const char                      *cwd;
        !            94: 
        !            95:        if (item->client != NULL && item->client->session == NULL)
        !            96:                cwd = item->client->cwd;
        !            97:        else if (s != NULL)
        !            98:                cwd = s->cwd;
        !            99:        else
        !           100:                cwd = NULL;
        !           101: 
        !           102:        cdata = xcalloc(1, sizeof *cdata);
        !           103:        cdata->cmd = format_single(item, args->argv[0], c, s, wl, wp);
        !           104: 
        !           105:        if (args_has(args, 't') && wp != NULL)
        !           106:                cdata->wp_id = wp->id;
        !           107:        else
        !           108:                cdata->wp_id = -1;
        !           109: 
        !           110:        if (!args_has(args, 'b'))
        !           111:                cdata->item = item;
        !           112: 
        !           113:        job_run(cdata->cmd, s, cwd, cmd_run_shell_callback, cmd_run_shell_free,
        !           114:            cdata);
        !           115: 
        !           116:        if (args_has(args, 'b'))
        !           117:                return (CMD_RETURN_NORMAL);
        !           118:        return (CMD_RETURN_WAIT);
        !           119: }
        !           120: 
        !           121: static void
        !           122: cmd_run_shell_callback(struct job *job)
        !           123: {
        !           124:        struct cmd_run_shell_data       *cdata = job->data;
        !           125:        char                            *cmd = cdata->cmd, *msg, *line;
        !           126:        size_t                           size;
        !           127:        int                              retcode;
        !           128: 
        !           129:        do {
        !           130:                if ((line = evbuffer_readline(job->event->input)) != NULL) {
        !           131:                        cmd_run_shell_print(job, line);
        !           132:                        free(line);
        !           133:                }
        !           134:        } while (line != NULL);
        !           135: 
        !           136:        size = EVBUFFER_LENGTH(job->event->input);
        !           137:        if (size != 0) {
        !           138:                line = xmalloc(size + 1);
        !           139:                memcpy(line, EVBUFFER_DATA(job->event->input), size);
        !           140:                line[size] = '\0';
        !           141: 
        !           142:                cmd_run_shell_print(job, line);
        !           143: 
        !           144:                free(line);
        !           145:        }
        !           146: 
        !           147:        msg = NULL;
        !           148:        if (WIFEXITED(job->status)) {
        !           149:                if ((retcode = WEXITSTATUS(job->status)) != 0)
        !           150:                        xasprintf(&msg, "'%s' returned %d", cmd, retcode);
        !           151:        } else if (WIFSIGNALED(job->status)) {
        !           152:                retcode = WTERMSIG(job->status);
        !           153:                xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
        !           154:        }
        !           155:        if (msg != NULL)
        !           156:                cmd_run_shell_print(job, msg);
        !           157:        free(msg);
        !           158: 
        !           159:        if (cdata->item != NULL)
        !           160:                cdata->item->flags &= ~CMDQ_WAITING;
        !           161: }
        !           162: 
        !           163: static void
        !           164: cmd_run_shell_free(void *data)
        !           165: {
        !           166:        struct cmd_run_shell_data       *cdata = data;
        !           167: 
        !           168:        free(cdata->cmd);
        !           169:        free(cdata);
        !           170: }