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Annotation of src/usr.bin/tmux/cmd-set-password.c, Revision 1.5

1.5     ! nicm        1: /* $OpenBSD: cmd-set-password.c,v 1.4 2009/07/26 12:58:44 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
                      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:
                     21: #include <pwd.h>
                     22: #include <unistd.h>
                     23:
                     24: #include "tmux.h"
                     25:
                     26: /*
                     27:  * Set server password.
                     28:  */
                     29:
                     30: int    cmd_set_password_parse(struct cmd *, int, char **, char **);
                     31: int    cmd_set_password_exec(struct cmd *, struct cmd_ctx *);
                     32: void   cmd_set_password_free(struct cmd *);
                     33: void   cmd_set_password_init(struct cmd *, int);
                     34: size_t cmd_set_password_print(struct cmd *, char *, size_t);
                     35:
                     36: struct cmd_set_password_data {
                     37:        char    *password;
                     38:        int      flag_encrypted;
                     39: };
                     40:
                     41: const struct cmd_entry cmd_set_password_entry = {
                     42:        "set-password", "pass",
                     43:        "[-c] password",
1.2       nicm       44:        0, 0,
1.1       nicm       45:        cmd_set_password_init,
                     46:        cmd_set_password_parse,
                     47:        cmd_set_password_exec,
                     48:        cmd_set_password_free,
                     49:        cmd_set_password_print
                     50: };
                     51:
                     52: void
                     53: cmd_set_password_init(struct cmd *self, unused int arg)
                     54: {
                     55:        struct cmd_set_password_data     *data;
                     56:
                     57:        self->data = data = xmalloc(sizeof *data);
                     58:        data->password = NULL;
                     59:        data->flag_encrypted = 0;
                     60: }
                     61:
                     62: int
                     63: cmd_set_password_parse(struct cmd *self, int argc, char **argv, char **cause)
                     64: {
                     65:        struct cmd_set_password_data    *data;
                     66:        int                              opt;
                     67:        char                            *out;
                     68:
1.5     ! nicm       69:        self->entry->init(self, KEYC_NONE);
1.1       nicm       70:        data = self->data;
                     71:
                     72:        while ((opt = getopt(argc, argv, "c")) != -1) {
                     73:                switch (opt) {
                     74:                case 'c':
                     75:                        data->flag_encrypted = 1;
                     76:                        break;
                     77:                default:
                     78:                        goto usage;
                     79:                }
                     80:        }
                     81:        argc -= optind;
                     82:        argv += optind;
                     83:        if (argc != 1)
                     84:                goto usage;
                     85:
                     86:        if (!data->flag_encrypted) {
                     87:                if ((out = crypt(argv[0], "$1")) != NULL)
                     88:                        data->password = xstrdup(out);
                     89:        } else
                     90:                data->password = xstrdup(argv[0]);
                     91:
                     92:        return (0);
                     93:
                     94: usage:
                     95:        xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
                     96:
                     97:        self->entry->free(self);
                     98:        return (-1);
                     99: }
                    100:
                    101: int
                    102: cmd_set_password_exec(struct cmd *self, struct cmd_ctx *ctx)
                    103: {
                    104:        struct cmd_set_password_data    *data = self->data;
                    105:
                    106:        if (data->password == NULL) {
                    107:                ctx->error(ctx, "failed to encrypt password");
                    108:                return (-1);
                    109:        }
                    110:
                    111:        if (server_password != NULL)
                    112:                xfree(server_password);
                    113:        if (*data->password == '\0')
                    114:                server_password = NULL;
                    115:        else
                    116:                server_password = xstrdup(data->password);
                    117:
                    118:        return (0);
                    119: }
                    120:
                    121: void
                    122: cmd_set_password_free(struct cmd *self)
                    123: {
                    124:        struct cmd_set_password_data    *data = self->data;
                    125:
                    126:        if (data->password != NULL)
                    127:                xfree(data->password);
                    128:        xfree(data);
                    129: }
                    130:
                    131: size_t
                    132: cmd_set_password_print(struct cmd *self, char *buf, size_t len)
                    133: {
                    134:        struct cmd_set_password_data    *data = self->data;
                    135:        size_t                           off = 0;
                    136:
                    137:        off += xsnprintf(buf, len, "%s", self->entry->name);
                    138:        if (data == NULL)
                    139:                return (off);
                    140:        if (off < len && data->flag_encrypted)
                    141:                off += xsnprintf(buf + off, len - off, " -c");
                    142:        if (off < len && data->password != NULL)
                    143:                off += xsnprintf(buf + off, len - off, " password");
                    144:        return (off);
                    145: }