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Annotation of src/usr.bin/tmux/cmd-run-shell.c, Revision 1.1

1.1     ! nicm        1: /* $OpenBSD$ */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
        !             5:  *
        !             6:  * Permission to use, copy, modify, and distribute this software for any
        !             7:  * purpose with or without fee is hereby granted, provided that the above
        !             8:  * copyright notice and this permission notice appear in all copies.
        !             9:  *
        !            10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
        !            15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
        !            16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            17:  */
        !            18:
        !            19: #include <sys/types.h>
        !            20: #include <sys/wait.h>
        !            21:
        !            22: #include <string.h>
        !            23:
        !            24: #include "tmux.h"
        !            25:
        !            26: /*
        !            27:  * Runs a command without a window.
        !            28:  */
        !            29:
        !            30: int    cmd_run_shell_exec(struct cmd *, struct cmd_ctx *);
        !            31:
        !            32: const struct cmd_entry cmd_run_shell_entry = {
        !            33:        "run-shell", "run",
        !            34:        "command",
        !            35:        CMD_ARG1, 0,
        !            36:        cmd_target_init,
        !            37:        cmd_target_parse,
        !            38:        cmd_run_shell_exec,
        !            39:        cmd_target_free,
        !            40:        cmd_target_print
        !            41: };
        !            42:
        !            43: int
        !            44: cmd_run_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
        !            45: {
        !            46:        struct cmd_target_data  *data = self->data;
        !            47:        FILE                    *fp;
        !            48:        char                    *buf, *lbuf, *msg;
        !            49:        size_t                   len;
        !            50:        int                      has_output, ret, status;
        !            51:
        !            52:        if ((fp = popen(data->arg, "r")) == NULL) {
        !            53:                ctx->error(ctx, "popen error");
        !            54:                return (-1);
        !            55:        }
        !            56:
        !            57:        has_output = 0;
        !            58:        lbuf = NULL;
        !            59:        while ((buf = fgetln(fp, &len)) != NULL) {
        !            60:                if (buf[len - 1] == '\n')
        !            61:                        buf[len - 1] = '\0';
        !            62:                else {
        !            63:                        lbuf = xmalloc(len + 1);
        !            64:                        memcpy(lbuf, buf, len);
        !            65:                        lbuf[len] = '\0';
        !            66:                        buf = lbuf;
        !            67:                }
        !            68:                ctx->print(ctx, "%s", buf);
        !            69:                has_output = 1;
        !            70:        }
        !            71:        if (lbuf != NULL)
        !            72:                xfree(lbuf);
        !            73:
        !            74:        msg = NULL;
        !            75:        status = pclose(fp);
        !            76:
        !            77:        if (WIFEXITED(status)) {
        !            78:                if ((ret = WEXITSTATUS(status)) == 0)
        !            79:                        return (0);
        !            80:                xasprintf(&msg, "'%s' returned %d", data->arg, ret);
        !            81:        } else if (WIFSIGNALED(status)) {
        !            82:                xasprintf(
        !            83:                    &msg, "'%s' terminated by signal %d", data->arg,
        !            84:                    WTERMSIG(status));
        !            85:        }
        !            86:
        !            87:        if (msg != NULL) {
        !            88:                if (has_output)
        !            89:                        ctx->print(ctx, "%s", msg);
        !            90:                else
        !            91:                        ctx->info(ctx, "%s", msg);
        !            92:                xfree(msg);
        !            93:        }
        !            94:
        !            95:        return (0);
        !            96: }