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Annotation of src/usr.bin/tmux/cmd-run-shell.c, Revision 1.43

1.43    ! nicm        1: /* $OpenBSD: cmd-run-shell.c,v 1.42 2016/11/11 11:37:25 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
1.3       nicm        5:  * Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
1.1       nicm        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:
1.12      nicm       23: #include <stdlib.h>
1.1       nicm       24: #include <string.h>
                     25:
                     26: #include "tmux.h"
                     27:
                     28: /*
                     29:  * Runs a command without a window.
                     30:  */
                     31:
1.41      nicm       32: static enum cmd_retval cmd_run_shell_exec(struct cmd *, struct cmdq_item *);
1.14      nicm       33:
1.38      nicm       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 *);
1.2       nicm       37:
1.1       nicm       38: const struct cmd_entry cmd_run_shell_entry = {
1.34      nicm       39:        .name = "run-shell",
                     40:        .alias = "run",
                     41:
                     42:        .args = { "bt:", 1, 1 },
                     43:        .usage = "[-b] " CMD_TARGET_PANE_USAGE " shell-command",
                     44:
1.35      nicm       45:        .tflag = CMD_PANE_CANFAIL,
                     46:
                     47:        .flags = 0,
1.34      nicm       48:        .exec = cmd_run_shell_exec
1.1       nicm       49: };
                     50:
1.2       nicm       51: struct cmd_run_shell_data {
1.41      nicm       52:        char                    *cmd;
                     53:        struct cmdq_item        *item;
                     54:        int                      wp_id;
1.2       nicm       55: };
                     56:
1.38      nicm       57: static void
1.14      nicm       58: cmd_run_shell_print(struct job *job, const char *msg)
                     59: {
                     60:        struct cmd_run_shell_data       *cdata = job->data;
1.21      nicm       61:        struct window_pane              *wp = NULL;
1.43    ! nicm       62:        struct cmd_find_state            fs;
1.14      nicm       63:
1.21      nicm       64:        if (cdata->wp_id != -1)
                     65:                wp = window_pane_find_by_id(cdata->wp_id);
1.43    ! nicm       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;
1.14      nicm       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:
1.38      nicm       84: static enum cmd_retval
1.41      nicm       85: cmd_run_shell_exec(struct cmd *self, struct cmdq_item *item)
1.1       nicm       86: {
1.10      nicm       87:        struct args                     *args = self->args;
1.2       nicm       88:        struct cmd_run_shell_data       *cdata;
1.17      nicm       89:        char                            *shellcmd;
1.41      nicm       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;
1.17      nicm       93:        struct format_tree              *ft;
1.30      nicm       94:        const char                      *cwd;
1.14      nicm       95:
1.41      nicm       96:        if (item->client != NULL && item->client->session == NULL)
                     97:                cwd = item->client->cwd;
1.33      nicm       98:        else if (s != NULL)
                     99:                cwd = s->cwd;
                    100:        else
                    101:                cwd = NULL;
1.40      nicm      102:
1.41      nicm      103:        ft = format_create(item, 0);
                    104:        format_defaults(ft, item->state.c, s, wl, wp);
1.17      nicm      105:        shellcmd = format_expand(ft, args->argv[0]);
                    106:        format_free(ft);
                    107:
1.37      nicm      108:        cdata = xcalloc(1, sizeof *cdata);
1.17      nicm      109:        cdata->cmd = shellcmd;
1.2       nicm      110:
1.40      nicm      111:        if (args_has(args, 't') && wp != NULL)
                    112:                cdata->wp_id = wp->id;
                    113:        else
                    114:                cdata->wp_id = -1;
                    115:
                    116:        if (!args_has(args, 'b'))
1.41      nicm      117:                cdata->item = item;
1.2       nicm      118:
1.28      nicm      119:        job_run(shellcmd, s, cwd, cmd_run_shell_callback, cmd_run_shell_free,
                    120:            cdata);
1.2       nicm      121:
1.40      nicm      122:        if (args_has(args, 'b'))
1.18      nicm      123:                return (CMD_RETURN_NORMAL);
                    124:        return (CMD_RETURN_WAIT);
1.2       nicm      125: }
1.1       nicm      126:
1.38      nicm      127: static void
1.2       nicm      128: cmd_run_shell_callback(struct job *job)
                    129: {
                    130:        struct cmd_run_shell_data       *cdata = job->data;
1.40      nicm      131:        char                            *cmd = cdata->cmd, *msg, *line;
1.5       nicm      132:        size_t                           size;
1.2       nicm      133:        int                              retcode;
1.5       nicm      134:        u_int                            lines;
1.7       nicm      135:
1.5       nicm      136:        lines = 0;
                    137:        do {
                    138:                if ((line = evbuffer_readline(job->event->input)) != NULL) {
1.18      nicm      139:                        cmd_run_shell_print(job, line);
1.16      nicm      140:                        free(line);
1.5       nicm      141:                        lines++;
                    142:                }
                    143:        } while (line != NULL);
                    144:
                    145:        size = EVBUFFER_LENGTH(job->event->input);
                    146:        if (size != 0) {
                    147:                line = xmalloc(size + 1);
                    148:                memcpy(line, EVBUFFER_DATA(job->event->input), size);
                    149:                line[size] = '\0';
1.2       nicm      150:
1.14      nicm      151:                cmd_run_shell_print(job, line);
1.5       nicm      152:                lines++;
1.2       nicm      153:
1.12      nicm      154:                free(line);
1.1       nicm      155:        }
                    156:
                    157:        msg = NULL;
1.2       nicm      158:        if (WIFEXITED(job->status)) {
                    159:                if ((retcode = WEXITSTATUS(job->status)) != 0)
                    160:                        xasprintf(&msg, "'%s' returned %d", cmd, retcode);
                    161:        } else if (WIFSIGNALED(job->status)) {
                    162:                retcode = WTERMSIG(job->status);
                    163:                xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
1.1       nicm      164:        }
1.25      nicm      165:        if (msg != NULL)
                    166:                cmd_run_shell_print(job, msg);
                    167:        free(msg);
1.40      nicm      168:
1.41      nicm      169:        if (cdata->item != NULL)
                    170:                cdata->item->flags &= ~CMDQ_WAITING;
1.2       nicm      171: }
                    172:
1.38      nicm      173: static void
1.2       nicm      174: cmd_run_shell_free(void *data)
                    175: {
                    176:        struct cmd_run_shell_data       *cdata = data;
                    177:
1.12      nicm      178:        free(cdata->cmd);
                    179:        free(cdata);
1.1       nicm      180: }