Annotation of src/usr.bin/tmux/cmd-load-buffer.c, Revision 1.45
1.45 ! nicm 1: /* $OpenBSD: cmd-load-buffer.c,v 1.44 2016/10/14 22:14:22 nicm Exp $ */
1.1 nicm 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:
1.12 nicm 19: #include <sys/types.h>
20:
1.1 nicm 21: #include <errno.h>
1.25 nicm 22: #include <fcntl.h>
1.11 nicm 23: #include <stdio.h>
1.1 nicm 24: #include <stdlib.h>
25: #include <string.h>
1.12 nicm 26: #include <unistd.h>
1.1 nicm 27:
28: #include "tmux.h"
29:
30: /*
1.18 nicm 31: * Loads a paste buffer from a file.
1.1 nicm 32: */
33:
1.43 nicm 34: static enum cmd_retval cmd_load_buffer_exec(struct cmd *, struct cmd_q *);
35:
36: static void cmd_load_buffer_callback(struct client *, int, void *);
1.1 nicm 37:
38: const struct cmd_entry cmd_load_buffer_entry = {
1.41 nicm 39: .name = "load-buffer",
40: .alias = "loadb",
41:
42: .args = { "b:", 1, 1 },
43: .usage = CMD_BUFFER_USAGE " path",
44:
1.44 nicm 45: .flags = CMD_AFTERHOOK,
1.41 nicm 46: .exec = cmd_load_buffer_exec
1.1 nicm 47: };
48:
1.45 ! nicm 49: struct cmd_load_buffer_data {
! 50: struct cmd_q *cmdq;
! 51: char *bufname;
! 52: };
! 53:
1.43 nicm 54: static enum cmd_retval
1.23 nicm 55: cmd_load_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 56: {
1.45 ! nicm 57: struct args *args = self->args;
! 58: struct cmd_load_buffer_data *cdata;
! 59: struct client *c = cmdq->client;
! 60: struct session *s;
! 61: FILE *f;
! 62: const char *path, *bufname, *cwd;
! 63: char *pdata, *new_pdata, *cause, *file;
! 64: char resolved[PATH_MAX];
! 65: size_t psize;
! 66: int ch, error;
1.16 nicm 67:
1.29 nicm 68: bufname = NULL;
69: if (args_has(args, 'b'))
70: bufname = args_get(args, 'b');
1.1 nicm 71:
1.16 nicm 72: path = args->argv[0];
73: if (strcmp(path, "-") == 0) {
1.45 ! nicm 74: cdata = xcalloc(1, sizeof *cdata);
! 75: cdata->cmdq = cmdq;
! 76: cdata->bufname = xstrdup(bufname);
! 77:
1.26 nicm 78: error = server_set_stdin_callback(c, cmd_load_buffer_callback,
1.45 ! nicm 79: cdata, &cause);
1.20 nicm 80: if (error != 0) {
1.23 nicm 81: cmdq_error(cmdq, "%s: %s", path, cause);
1.21 nicm 82: free(cause);
1.22 nicm 83: return (CMD_RETURN_ERROR);
1.20 nicm 84: }
1.23 nicm 85: return (CMD_RETURN_WAIT);
1.13 nicm 86: }
87:
1.42 nicm 88: if (c != NULL && c->session == NULL && c->cwd != NULL)
1.25 nicm 89: cwd = c->cwd;
1.42 nicm 90: else if ((s = c->session) != NULL && s->cwd != NULL)
1.25 nicm 91: cwd = s->cwd;
92: else
1.35 nicm 93: cwd = ".";
1.25 nicm 94:
1.36 nicm 95: if (*path == '/')
96: file = xstrdup(path);
1.35 nicm 97: else
1.36 nicm 98: xasprintf(&file, "%s/%s", cwd, path);
1.37 nicm 99: if (realpath(file, resolved) == NULL &&
100: strlcpy(resolved, file, sizeof resolved) >= sizeof resolved) {
101: cmdq_error(cmdq, "%s: %s", file, strerror(ENAMETOOLONG));
1.36 nicm 102: return (CMD_RETURN_ERROR);
103: }
104: f = fopen(resolved, "rb");
1.35 nicm 105: free(file);
106: if (f == NULL) {
107: cmdq_error(cmdq, "%s: %s", resolved, strerror(errno));
1.22 nicm 108: return (CMD_RETURN_ERROR);
1.1 nicm 109: }
110:
1.11 nicm 111: pdata = NULL;
112: psize = 0;
113: while ((ch = getc(f)) != EOF) {
114: /* Do not let the server die due to memory exhaustion. */
115: if ((new_pdata = realloc(pdata, psize + 2)) == NULL) {
1.23 nicm 116: cmdq_error(cmdq, "realloc error: %s", strerror(errno));
1.11 nicm 117: goto error;
118: }
119: pdata = new_pdata;
120: pdata[psize++] = ch;
1.1 nicm 121: }
1.11 nicm 122: if (ferror(f)) {
1.35 nicm 123: cmdq_error(cmdq, "%s: read error", resolved);
1.9 nicm 124: goto error;
1.1 nicm 125: }
1.11 nicm 126: if (pdata != NULL)
127: pdata[psize] = '\0';
1.1 nicm 128:
1.13 nicm 129: fclose(f);
1.1 nicm 130:
1.29 nicm 131: if (paste_set(pdata, psize, bufname, &cause) != 0) {
132: cmdq_error(cmdq, "%s", cause);
1.21 nicm 133: free(pdata);
1.29 nicm 134: free(cause);
1.22 nicm 135: return (CMD_RETURN_ERROR);
1.1 nicm 136: }
137:
1.22 nicm 138: return (CMD_RETURN_NORMAL);
1.9 nicm 139:
140: error:
1.21 nicm 141: free(pdata);
1.13 nicm 142: if (f != NULL)
143: fclose(f);
1.22 nicm 144: return (CMD_RETURN_ERROR);
1.13 nicm 145: }
146:
1.43 nicm 147: static void
1.20 nicm 148: cmd_load_buffer_callback(struct client *c, int closed, void *data)
1.13 nicm 149: {
1.45 ! nicm 150: struct cmd_load_buffer_data *cdata = data;
! 151: char *pdata, *cause, *saved;
! 152: size_t psize;
1.13 nicm 153:
1.20 nicm 154: if (!closed)
155: return;
156: c->stdin_callback = NULL;
157:
1.34 nicm 158: server_client_unref(c);
1.23 nicm 159: if (c->flags & CLIENT_DEAD)
1.45 ! nicm 160: goto out;
1.13 nicm 161:
1.20 nicm 162: psize = EVBUFFER_LENGTH(c->stdin_data);
1.29 nicm 163: if (psize == 0 || (pdata = malloc(psize + 1)) == NULL)
1.23 nicm 164: goto out;
1.29 nicm 165:
1.20 nicm 166: memcpy(pdata, EVBUFFER_DATA(c->stdin_data), psize);
1.13 nicm 167: pdata[psize] = '\0';
1.20 nicm 168: evbuffer_drain(c->stdin_data, psize);
1.13 nicm 169:
1.45 ! nicm 170: if (paste_set(pdata, psize, cdata->bufname, &cause) != 0) {
1.13 nicm 171: /* No context so can't use server_client_msg_error. */
1.38 nicm 172: if (~c->flags & CLIENT_UTF8) {
173: saved = cause;
174: cause = utf8_sanitize(saved);
175: free(saved);
176: }
1.29 nicm 177: evbuffer_add_printf(c->stderr_data, "%s", cause);
1.39 nicm 178: server_client_push_stderr(c);
1.27 nicm 179: free(pdata);
1.29 nicm 180: free(cause);
1.13 nicm 181: }
1.45 ! nicm 182: out:
! 183: cdata->cmdq->flags &= ~CMD_Q_WAITING;
1.23 nicm 184:
1.45 ! nicm 185: free(cdata->bufname);
! 186: free(cdata);
1.1 nicm 187: }
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