[u/mdw/putty] / cmdline.c

/*
 * cmdline.c - command-line parsing shared between many of the
 * PuTTY applications
 */

#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include "putty.h"

/*
 * Some command-line parameters need to be saved up until after
 * we've loaded the saved session which will form the basis of our
 * eventual running configuration. For this we use the macro
 * SAVEABLE, which notices if the `need_save' parameter is set and
 * saves the parameter and value on a list.
 * 
 * We also assign priorities to saved parameters, just to slightly
 * ameliorate silly ordering problems. For example, if you specify
 * a saved session to load, it will be loaded _before_ all your
 * local modifications such as -L are evaluated; and if you specify
 * a protocol and a port, the protocol is set up first so that the
 * port can override its choice of port number.
 * 
 * (In fact -load is not saved at all, since in at least Plink the
 * processing of further command-line options depends on whether or
 * not the loaded session contained a hostname. So it must be
 * executed immediately.)
 */

#define NPRIORITIES 2

struct cmdline_saved_param {
    char *p, *value;
};
struct cmdline_saved_param_set {
    struct cmdline_saved_param *params;
    int nsaved, savesize;
};

/*
 * C guarantees this structure will be initialised to all zero at
 * program start, which is exactly what we want.
 */
static struct cmdline_saved_param_set saves[NPRIORITIES];

static void cmdline_save_param(char *p, char *value, int pri)
{
    if (saves[pri].nsaved >= saves[pri].savesize) {
	saves[pri].savesize = saves[pri].nsaved + 32;
	saves[pri].params = sresize(saves[pri].params, saves[pri].savesize,
				    struct cmdline_saved_param);
    }
    saves[pri].params[saves[pri].nsaved].p = p;
    saves[pri].params[saves[pri].nsaved].value = value;
    saves[pri].nsaved++;
}

static char *cmdline_password = NULL;

void cmdline_cleanup(void)
{
    int pri;

    if (cmdline_password) {
	memset(cmdline_password, 0, strlen(cmdline_password));
	sfree(cmdline_password);
	cmdline_password = NULL;
    }
    
    for (pri = 0; pri < NPRIORITIES; pri++) {
	sfree(saves[pri].params);
	saves[pri].params = NULL;
	saves[pri].savesize = 0;
	saves[pri].nsaved = 0;
    }
}

#define SAVEABLE(pri) do { \
    if (need_save) { cmdline_save_param(p, value, pri); return ret; } \
} while (0)

/*
 * Similar interface to get_userpass_input(), except that here a -1
 * return means that we aren't capable of processing the prompt and
 * someone else should do it.
 */
int cmdline_get_passwd_input(prompts_t *p, unsigned char *in, int inlen) {

    static int tried_once = 0;

    /*
     * We only handle prompts which don't echo (which we assume to be
     * passwords), and (currently) we only cope with a password prompt
     * that comes in a prompt-set on its own.
     */
    if (!cmdline_password || in || p->n_prompts != 1 || p->prompts[0]->echo) {
	return -1;
    }

    /*
     * If we've tried once, return utter failure (no more passwords left
     * to try).
     */
    if (tried_once)
	return 0;

    strncpy(p->prompts[0]->result, cmdline_password,
	    p->prompts[0]->result_len);
    p->prompts[0]->result[p->prompts[0]->result_len-1] = '\0';
    memset(cmdline_password, 0, strlen(cmdline_password));
    sfree(cmdline_password);
    cmdline_password = NULL;
    tried_once = 1;
    return 1;

}

/*
 * Here we have a flags word which describes the capabilities of
 * the particular tool on whose behalf we're running. We will
 * refuse certain command-line options if a particular tool
 * inherently can't do anything sensible. For example, the file
 * transfer tools (psftp, pscp) can't do a great deal with protocol
 * selections (ever tried running scp over telnet?) or with port
 * forwarding (even if it wasn't a hideously bad idea, they don't
 * have the select() infrastructure to make them work).
 */
int cmdline_tooltype = 0;

static int cmdline_check_unavailable(int flag, char *p)
{
    if (cmdline_tooltype & flag) {
	cmdline_error("option \"%s\" not available in this tool", p);
	return 1;
    }
    return 0;
}

#define UNAVAILABLE_IN(flag) do { \
    if (cmdline_check_unavailable(flag, p)) return ret; \
} while (0)

/*
 * Process a standard command-line parameter. `p' is the parameter
 * in question; `value' is the subsequent element of argv, which
 * may or may not be required as an operand to the parameter.
 * If `need_save' is 1, arguments which need to be saved as
 * described at this top of this file are, for later execution;
 * if 0, they are processed normally. (-1 is a special value used
 * by pterm to count arguments for a preliminary pass through the
 * argument list; it causes immediate return with an appropriate
 * value with no action taken.)
 * Return value is 2 if both arguments were used; 1 if only p was
 * used; 0 if the parameter wasn't one we recognised; -2 if it
 * should have been 2 but value was NULL.
 */

#define RETURN(x) do { \
    if ((x) == 2 && !value) return -2; \
    ret = x; \
    if (need_save < 0) return x; \
} while (0)

int cmdline_process_param(char *p, char *value, int need_save, Config *cfg)
{
    int ret = 0;

    if (!strcmp(p, "-load")) {
	RETURN(2);
	/* This parameter must be processed immediately rather than being
	 * saved. */
	do_defaults(value, cfg);
	loaded_session = TRUE;
	return 2;
    }
    if (!strcmp(p, "-ssh")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	default_protocol = cfg->protocol = PROT_SSH;
	default_port = cfg->port = 22;
	return 1;
    }
    if (!strcmp(p, "-telnet")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	default_protocol = cfg->protocol = PROT_TELNET;
	default_port = cfg->port = 23;
	return 1;
    }
    if (!strcmp(p, "-rlogin")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	default_protocol = cfg->protocol = PROT_RLOGIN;
	default_port = cfg->port = 513;
	return 1;
    }
    if (!strcmp(p, "-raw")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	default_protocol = cfg->protocol = PROT_RAW;
    }
    if (!strcmp(p, "-serial")) {
	RETURN(1);
	/* Serial is not NONNETWORK in an odd sense of the word */
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	default_protocol = cfg->protocol = PROT_SERIAL;
	/* The host parameter will already be loaded into cfg->host, so copy it across */
	strncpy(cfg->serline, cfg->host, sizeof(cfg->serline) - 1);
	cfg->serline[sizeof(cfg->serline) - 1] = '\0';
    }
    if (!strcmp(p, "-v")) {
	RETURN(1);
	flags |= FLAG_VERBOSE;
    }
    if (!strcmp(p, "-l")) {
	RETURN(2);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	strncpy(cfg->username, value, sizeof(cfg->username));
	cfg->username[sizeof(cfg->username) - 1] = '\0';
    }
    if (!strcmp(p, "-loghost")) {
	RETURN(2);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	strncpy(cfg->loghost, value, sizeof(cfg->loghost));
	cfg->loghost[sizeof(cfg->loghost) - 1] = '\0';
    }
    if ((!strcmp(p, "-L") || !strcmp(p, "-R") || !strcmp(p, "-D"))) {
	char *fwd, *ptr, *q, *qq;
	int dynamic, i=0;
	RETURN(2);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	dynamic = !strcmp(p, "-D");
	fwd = value;
	ptr = cfg->portfwd;
	/* if existing forwards, find end of list */
	while (*ptr) {
	    while (*ptr)
		ptr++;
	    ptr++;
	}
	i = ptr - cfg->portfwd;
	ptr[0] = p[1];  /* insert a 'L', 'R' or 'D' at the start */
	ptr++;
	if (1 + strlen(fwd) + 2 > sizeof(cfg->portfwd) - i) {
	    cmdline_error("out of space for port forwardings");
	    return ret;
	}
	strncpy(ptr, fwd, sizeof(cfg->portfwd) - i - 2);
	if (!dynamic) {
	    /*
	     * We expect _at least_ two colons in this string. The
	     * possible formats are `sourceport:desthost:destport',
	     * or `sourceip:sourceport:desthost:destport' if you're
	     * specifying a particular loopback address. We need to
	     * replace the one between source and dest with a \t;
	     * this means we must find the second-to-last colon in
	     * the string.
	     */
	    q = qq = strchr(ptr, ':');
	    while (qq) {
		char *qqq = strchr(qq+1, ':');
		if (qqq)
		    q = qq;
		qq = qqq;
	    }
	    if (q) *q = '\t';	       /* replace second-last colon with \t */
	}
	cfg->portfwd[sizeof(cfg->portfwd) - 1] = '\0';
	cfg->portfwd[sizeof(cfg->portfwd) - 2] = '\0';
	ptr[strlen(ptr)+1] = '\000';    /* append 2nd '\000' */
    }
    if ((!strcmp(p, "-nc"))) {
	char *host, *portp;

	RETURN(2);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);

	host = portp = value;
	while (*portp && *portp != ':')
	    portp++;
	if (*portp) {
	    unsigned len = portp - host;
	    if (len >= sizeof(cfg->ssh_nc_host))
		len = sizeof(cfg->ssh_nc_host) - 1;
	    memcpy(cfg->ssh_nc_host, value, len);
	    cfg->ssh_nc_host[len] = '\0';
	    cfg->ssh_nc_port = atoi(portp+1);
	} else {
	    cmdline_error("-nc expects argument of form 'host:port'");
	    return ret;
	}
    }
    if (!strcmp(p, "-m")) {
	char *filename, *command;
	int cmdlen, cmdsize;
	FILE *fp;
	int c, d;

	RETURN(2);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);

	filename = value;

	cmdlen = cmdsize = 0;
	command = NULL;
	fp = fopen(filename, "r");
	if (!fp) {
	    cmdline_error("unable to open command "
			  "file \"%s\"", filename);
	    return ret;
	}
	do {
	    c = fgetc(fp);
	    d = c;
	    if (c == EOF)
		d = 0;
	    if (cmdlen >= cmdsize) {
		cmdsize = cmdlen + 512;
		command = sresize(command, cmdsize, char);
	    }
	    command[cmdlen++] = d;
	} while (c != EOF);
	cfg->remote_cmd_ptr = command;
	cfg->remote_cmd_ptr2 = NULL;
	cfg->nopty = TRUE;      /* command => no terminal */
	fclose(fp);
    }
    if (!strcmp(p, "-P")) {
	RETURN(2);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(1);		       /* lower priority than -ssh,-telnet */
	cfg->port = atoi(value);
    }
    if (!strcmp(p, "-pw")) {
	RETURN(2);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(1);
	/* We delay evaluating this until after the protocol is decided,
	 * so that we can warn if it's of no use with the selected protocol */
	if (cfg->protocol != PROT_SSH)
	    cmdline_error("the -pw option can only be used with the "
			  "SSH protocol");
	else {
	    cmdline_password = dupstr(value);
	    /* Assuming that `value' is directly from argv, make a good faith
	     * attempt to trample it, to stop it showing up in `ps' output
	     * on Unix-like systems. Not guaranteed, of course. */
	    memset(value, 0, strlen(value));
	}
    }

    if (!strcmp(p, "-agent") || !strcmp(p, "-pagent") ||
	!strcmp(p, "-pageant")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->tryagent = TRUE;
    }
    if (!strcmp(p, "-noagent") || !strcmp(p, "-nopagent") ||
	!strcmp(p, "-nopageant")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->tryagent = FALSE;
    }

    if (!strcmp(p, "-A")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->agentfwd = 1;
    }
    if (!strcmp(p, "-a")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->agentfwd = 0;
    }

    if (!strcmp(p, "-X")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->x11_forward = 1;
    }
    if (!strcmp(p, "-x")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->x11_forward = 0;
    }

    if (!strcmp(p, "-t")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(1);	/* lower priority than -m */
	cfg->nopty = 0;
    }
    if (!strcmp(p, "-T")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(1);
	cfg->nopty = 1;
    }

    if (!strcmp(p, "-N")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->ssh_no_shell = 1;
    }

    if (!strcmp(p, "-C")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->compression = 1;
    }

    if (!strcmp(p, "-1")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->sshprot = 0;	       /* ssh protocol 1 only */
    }
    if (!strcmp(p, "-2")) {
	RETURN(1);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->sshprot = 3;	       /* ssh protocol 2 only */
    }

    if (!strcmp(p, "-i")) {
	RETURN(2);
	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	SAVEABLE(0);
	cfg->keyfile = filename_from_str(value);
    }

    if (!strcmp(p, "-4") || !strcmp(p, "-ipv4")) {
	RETURN(1);
	SAVEABLE(1);
	cfg->addressfamily = ADDRTYPE_IPV4;
    }
    if (!strcmp(p, "-6") || !strcmp(p, "-ipv6")) {
	RETURN(1);
	SAVEABLE(1);
	cfg->addressfamily = ADDRTYPE_IPV6;
    }
    if (!strcmp(p, "-sercfg")) {
	char* nextitem;
	RETURN(2);
	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER | TOOLTYPE_NONNETWORK);
	SAVEABLE(1);
	if (cfg->protocol != PROT_SERIAL)
	    cmdline_error("the -sercfg option can only be used with the "
			  "serial protocol");
	/* Value[0] contains one or more , separated values, like 19200,8,n,1,X */
	nextitem = value;
	while (nextitem[0] != '\0') {
	    int length, skip;
	    char *end = strchr(nextitem, ',');
	    if (!end) {
		length = strlen(nextitem);
		skip = 0;
	    } else {
		length = end - nextitem;
		nextitem[length] = '\0';
		skip = 1;
	    }
	    if (length == 1) {
		switch (*nextitem) {
		  case '1':
		    cfg->serstopbits = 2;
		    break;
		  case '2':
		    cfg->serstopbits = 4;
		    break;

		  case '5':
		    cfg->serdatabits = 5;
		    break;
		  case '6':
		    cfg->serdatabits = 6;
		    break;
		  case '7':
		    cfg->serdatabits = 7;
		    break;
		  case '8':
		    cfg->serdatabits = 8;
		    break;
		  case '9':
		    cfg->serdatabits = 9;
		    break;

		  case 'n':
		    cfg->serparity = SER_PAR_NONE;
		    break;
		  case 'o':
		    cfg->serparity = SER_PAR_ODD;
		    break;
		  case 'e':
		    cfg->serparity = SER_PAR_EVEN;
		    break;
		  case 'm':
		    cfg->serparity = SER_PAR_MARK;
		    break;
		  case 's':
		    cfg->serparity = SER_PAR_SPACE;
		    break;

		  case 'N':
		    cfg->serflow = SER_FLOW_NONE;
		    break;
		  case 'X':
		    cfg->serflow = SER_FLOW_XONXOFF;
		    break;
		  case 'R':
		    cfg->serflow = SER_FLOW_RTSCTS;
		    break;
		  case 'D':
		    cfg->serflow = SER_FLOW_DSRDTR;
		    break;

		  default:
		    cmdline_error("Unrecognised suboption \"-sercfg %c\"",
				  *nextitem);
		}
	    } else if (length == 3 && !strncmp(nextitem,"1.5",3)) {
		/* Messy special case */
		cfg->serstopbits = 3;
	    } else {
		int serspeed = atoi(nextitem);
		if (serspeed != 0) {
		    cfg->serspeed = serspeed;
		} else {
		    cmdline_error("Unrecognised suboption \"-sercfg %s\"",
				  nextitem);
		}
	    }
	    nextitem += length + skip;
	}
    }
    return ret;			       /* unrecognised */
}

void cmdline_run_saved(Config *cfg)
{
    int pri, i;
    for (pri = 0; pri < NPRIORITIES; pri++)
	for (i = 0; i < saves[pri].nsaved; i++)
	    cmdline_process_param(saves[pri].params[i].p,
				  saves[pri].params[i].value, 0, cfg);
}
Commit	Line	Data
eaf1e20a	1	/*
	2	* cmdline.c - command-line parsing shared between many of the
	3	* PuTTY applications
	4	*/
	5
dfe3332b	6	#include <stdio.h>
	7	#include <assert.h>
	8	#include <stdlib.h>
	9	#include "putty.h"
	10
	11	/*
	12	* Some command-line parameters need to be saved up until after
	13	* we've loaded the saved session which will form the basis of our
	14	* eventual running configuration. For this we use the macro
	15	* SAVEABLE, which notices if the `need_save' parameter is set and
	16	* saves the parameter and value on a list.
	17	*
	18	* We also assign priorities to saved parameters, just to slightly
	19	* ameliorate silly ordering problems. For example, if you specify
	20	* a saved session to load, it will be loaded _before_ all your
	21	* local modifications such as -L are evaluated; and if you specify
	22	* a protocol and a port, the protocol is set up first so that the
	23	* port can override its choice of port number.
c725e24c	24	*
	25	* (In fact -load is not saved at all, since in at least Plink the
	26	* processing of further command-line options depends on whether or
	27	* not the loaded session contained a hostname. So it must be
	28	* executed immediately.)
dfe3332b	29	*/
dfe3332b	30
c725e24c	31	#define NPRIORITIES 2
dfe3332b	32
	33	struct cmdline_saved_param {
	34	char p, value;
	35	};
	36	struct cmdline_saved_param_set {
	37	struct cmdline_saved_param *params;
	38	int nsaved, savesize;
	39	};
	40
	41	/*
	42	* C guarantees this structure will be initialised to all zero at
	43	* program start, which is exactly what we want.
	44	*/
	45	static struct cmdline_saved_param_set saves[NPRIORITIES];
	46
	47	static void cmdline_save_param(char p, char value, int pri)
	48	{
	49	if (saves[pri].nsaved >= saves[pri].savesize) {
	50	saves[pri].savesize = saves[pri].nsaved + 32;
3d88e64d	51	saves[pri].params = sresize(saves[pri].params, saves[pri].savesize,
3d88e64d	52	struct cmdline_saved_param);
dfe3332b	53	}
	54	saves[pri].params[saves[pri].nsaved].p = p;
	55	saves[pri].params[saves[pri].nsaved].value = value;
	56	saves[pri].nsaved++;
	57	}
	58
b72bdf11	59	static char *cmdline_password = NULL;
b72bdf11	60
679539d7	61	void cmdline_cleanup(void)
	62	{
	63	int pri;
	64
b72bdf11	65	if (cmdline_password) {
	66	memset(cmdline_password, 0, strlen(cmdline_password));
	67	sfree(cmdline_password);
	68	cmdline_password = NULL;
	69	}
	70
	71	for (pri = 0; pri < NPRIORITIES; pri++) {
679539d7	72	sfree(saves[pri].params);
b72bdf11	73	saves[pri].params = NULL;
	74	saves[pri].savesize = 0;
	75	saves[pri].nsaved = 0;
	76	}
679539d7	77	}
679539d7	78
dfe3332b	79	#define SAVEABLE(pri) do { \
	80	if (need_save) { cmdline_save_param(p, value, pri); return ret; } \
	81	} while (0)
	82
edd0cb8a	83	/*
	84	* Similar interface to get_userpass_input(), except that here a -1
	85	* return means that we aren't capable of processing the prompt and
	86	* someone else should do it.
	87	*/
	88	int cmdline_get_passwd_input(prompts_t p, unsigned char in, int inlen) {
dfe3332b	89
dfe3332b	90	static int tried_once = 0;
dfe3332b	91
edd0cb8a	92	/*
	93	* We only handle prompts which don't echo (which we assume to be
	94	* passwords), and (currently) we only cope with a password prompt
	95	* that comes in a prompt-set on its own.
	96	*/
	97	if (!cmdline_password \|\| in \|\| p->n_prompts != 1 \|\| p->prompts[0]->echo) {
	98	return -1;
	99	}
dfe3332b	100
edd0cb8a	101	/*
	102	* If we've tried once, return utter failure (no more passwords left
	103	* to try).
	104	*/
	105	if (tried_once)
dfe3332b	106	return 0;
edd0cb8a	107
	108	strncpy(p->prompts[0]->result, cmdline_password,
	109	p->prompts[0]->result_len);
	110	p->prompts[0]->result[p->prompts[0]->result_len-1] = '\0';
	111	memset(cmdline_password, 0, strlen(cmdline_password));
b72bdf11	112	sfree(cmdline_password);
b72bdf11	113	cmdline_password = NULL;
edd0cb8a	114	tried_once = 1;
	115	return 1;
	116
dfe3332b	117	}
	118
	119	/*
	120	* Here we have a flags word which describes the capabilities of
	121	* the particular tool on whose behalf we're running. We will
	122	* refuse certain command-line options if a particular tool
	123	* inherently can't do anything sensible. For example, the file
	124	* transfer tools (psftp, pscp) can't do a great deal with protocol
	125	* selections (ever tried running scp over telnet?) or with port
	126	* forwarding (even if it wasn't a hideously bad idea, they don't
	127	* have the select() infrastructure to make them work).
	128	*/
	129	int cmdline_tooltype = 0;
	130
	131	static int cmdline_check_unavailable(int flag, char *p)
	132	{
	133	if (cmdline_tooltype & flag) {
	134	cmdline_error("option \"%s\" not available in this tool", p);
	135	return 1;
	136	}
	137	return 0;
	138	}
	139
	140	#define UNAVAILABLE_IN(flag) do { \
	141	if (cmdline_check_unavailable(flag, p)) return ret; \
	142	} while (0)
	143
	144	/*
	145	* Process a standard command-line parameter. `p' is the parameter
	146	* in question; `value' is the subsequent element of argv, which
	147	* may or may not be required as an operand to the parameter.
b552f500	148	* If `need_save' is 1, arguments which need to be saved as
	149	* described at this top of this file are, for later execution;
	150	* if 0, they are processed normally. (-1 is a special value used
	151	* by pterm to count arguments for a preliminary pass through the
	152	* argument list; it causes immediate return with an appropriate
	153	* value with no action taken.)
dfe3332b	154	* Return value is 2 if both arguments were used; 1 if only p was
	155	* used; 0 if the parameter wasn't one we recognised; -2 if it
	156	* should have been 2 but value was NULL.
	157	*/
	158
	159	#define RETURN(x) do { \
	160	if ((x) == 2 && !value) return -2; \
	161	ret = x; \
46a3419b	162	if (need_save < 0) return x; \
dfe3332b	163	} while (0)
dfe3332b	164
5555d393	165	int cmdline_process_param(char p, char value, int need_save, Config *cfg)
dfe3332b	166	{
	167	int ret = 0;
	168
	169	if (!strcmp(p, "-load")) {
	170	RETURN(2);
c725e24c	171	/* This parameter must be processed immediately rather than being
c725e24c	172	* saved. */
5555d393	173	do_defaults(value, cfg);
18e62ad8	174	loaded_session = TRUE;
dfe3332b	175	return 2;
	176	}
	177	if (!strcmp(p, "-ssh")) {
	178	RETURN(1);
46a3419b	179	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	180	SAVEABLE(0);
5555d393	181	default_protocol = cfg->protocol = PROT_SSH;
5555d393	182	default_port = cfg->port = 22;
dfe3332b	183	return 1;
	184	}
	185	if (!strcmp(p, "-telnet")) {
	186	RETURN(1);
46a3419b	187	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	188	SAVEABLE(0);
5555d393	189	default_protocol = cfg->protocol = PROT_TELNET;
5555d393	190	default_port = cfg->port = 23;
dfe3332b	191	return 1;
	192	}
	193	if (!strcmp(p, "-rlogin")) {
	194	RETURN(1);
46a3419b	195	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	196	SAVEABLE(0);
5555d393	197	default_protocol = cfg->protocol = PROT_RLOGIN;
5555d393	198	default_port = cfg->port = 513;
dfe3332b	199	return 1;
	200	}
	201	if (!strcmp(p, "-raw")) {
	202	RETURN(1);
46a3419b	203	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	204	SAVEABLE(0);
5555d393	205	default_protocol = cfg->protocol = PROT_RAW;
dfe3332b	206	}
9621bbab	207	if (!strcmp(p, "-serial")) {
	208	RETURN(1);
	209	/* Serial is not NONNETWORK in an odd sense of the word */
	210	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
	211	SAVEABLE(0);
	212	default_protocol = cfg->protocol = PROT_SERIAL;
	213	/* The host parameter will already be loaded into cfg->host, so copy it across */
	214	strncpy(cfg->serline, cfg->host, sizeof(cfg->serline) - 1);
	215	cfg->serline[sizeof(cfg->serline) - 1] = '\0';
	216	}
dfe3332b	217	if (!strcmp(p, "-v")) {
	218	RETURN(1);
	219	flags \|= FLAG_VERBOSE;
	220	}
	221	if (!strcmp(p, "-l")) {
	222	RETURN(2);
46a3419b	223	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
c725e24c	224	SAVEABLE(0);
5555d393	225	strncpy(cfg->username, value, sizeof(cfg->username));
5555d393	226	cfg->username[sizeof(cfg->username) - 1] = '\0';
dfe3332b	227	}
881da168	228	if (!strcmp(p, "-loghost")) {
	229	RETURN(2);
	230	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
	231	SAVEABLE(0);
	232	strncpy(cfg->loghost, value, sizeof(cfg->loghost));
	233	cfg->loghost[sizeof(cfg->loghost) - 1] = '\0';
	234	}
820ebe3b	235	if ((!strcmp(p, "-L") \|\| !strcmp(p, "-R") \|\| !strcmp(p, "-D"))) {
6ee9b735	236	char fwd, ptr, q, qq;
820ebe3b	237	int dynamic, i=0;
dfe3332b	238	RETURN(2);
46a3419b	239	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	240	SAVEABLE(0);
820ebe3b	241	dynamic = !strcmp(p, "-D");
dfe3332b	242	fwd = value;
5555d393	243	ptr = cfg->portfwd;
116f2044	244	/* if existing forwards, find end of list */
	245	while (*ptr) {
	246	while (*ptr)
	247	ptr++;
	248	ptr++;
dfe3332b	249	}
116f2044	250	i = ptr - cfg->portfwd;
820ebe3b	251	ptr[0] = p[1]; /* insert a 'L', 'R' or 'D' at the start */
116f2044	252	ptr++;
116f2044	253	if (1 + strlen(fwd) + 2 > sizeof(cfg->portfwd) - i) {
dfe3332b	254	cmdline_error("out of space for port forwardings");
	255	return ret;
	256	}
116f2044	257	strncpy(ptr, fwd, sizeof(cfg->portfwd) - i - 2);
820ebe3b	258	if (!dynamic) {
	259	/*
	260	* We expect _at least_ two colons in this string. The
	261	* possible formats are `sourceport:desthost:destport',
	262	* or `sourceip:sourceport:desthost:destport' if you're
	263	* specifying a particular loopback address. We need to
	264	* replace the one between source and dest with a \t;
	265	* this means we must find the second-to-last colon in
	266	* the string.
	267	*/
	268	q = qq = strchr(ptr, ':');
	269	while (qq) {
	270	char *qqq = strchr(qq+1, ':');
	271	if (qqq)
	272	q = qq;
	273	qq = qqq;
	274	}
	275	if (q) q = '\t'; / replace second-last colon with \t */
6ee9b735	276	}
5555d393	277	cfg->portfwd[sizeof(cfg->portfwd) - 1] = '\0';
5555d393	278	cfg->portfwd[sizeof(cfg->portfwd) - 2] = '\0';
116f2044	279	ptr[strlen(ptr)+1] = '\000'; /* append 2nd '\000' */
dfe3332b	280	}
feb02b4e	281	if ((!strcmp(p, "-nc"))) {
	282	char host, portp;
	283
	284	RETURN(2);
	285	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
	286	SAVEABLE(0);
	287
	288	host = portp = value;
	289	while (portp && portp != ':')
	290	portp++;
	291	if (*portp) {
	292	unsigned len = portp - host;
	293	if (len >= sizeof(cfg->ssh_nc_host))
	294	len = sizeof(cfg->ssh_nc_host) - 1;
786476b9	295	memcpy(cfg->ssh_nc_host, value, len);
786476b9	296	cfg->ssh_nc_host[len] = '\0';
feb02b4e	297	cfg->ssh_nc_port = atoi(portp+1);
	298	} else {
	299	cmdline_error("-nc expects argument of form 'host:port'");
	300	return ret;
	301	}
	302	}
dfe3332b	303	if (!strcmp(p, "-m")) {
	304	char filename, command;
	305	int cmdlen, cmdsize;
	306	FILE *fp;
	307	int c, d;
	308
	309	RETURN(2);
46a3419b	310	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	311	SAVEABLE(0);
dfe3332b	312
	313	filename = value;
	314
	315	cmdlen = cmdsize = 0;
	316	command = NULL;
	317	fp = fopen(filename, "r");
	318	if (!fp) {
	319	cmdline_error("unable to open command "
	320	"file \"%s\"", filename);
	321	return ret;
	322	}
	323	do {
	324	c = fgetc(fp);
	325	d = c;
	326	if (c == EOF)
	327	d = 0;
	328	if (cmdlen >= cmdsize) {
	329	cmdsize = cmdlen + 512;
3d88e64d	330	command = sresize(command, cmdsize, char);
dfe3332b	331	}
	332	command[cmdlen++] = d;
	333	} while (c != EOF);
5555d393	334	cfg->remote_cmd_ptr = command;
	335	cfg->remote_cmd_ptr2 = NULL;
	336	cfg->nopty = TRUE; /* command => no terminal */
2fa6ce2c	337	fclose(fp);
dfe3332b	338	}
	339	if (!strcmp(p, "-P")) {
	340	RETURN(2);
46a3419b	341	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
c725e24c	342	SAVEABLE(1); /* lower priority than -ssh,-telnet */
5555d393	343	cfg->port = atoi(value);
dfe3332b	344	}
	345	if (!strcmp(p, "-pw")) {
	346	RETURN(2);
46a3419b	347	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
01ccff1b	348	SAVEABLE(1);
	349	/* We delay evaluating this until after the protocol is decided,
	350	* so that we can warn if it's of no use with the selected protocol */
	351	if (cfg->protocol != PROT_SSH)
4858529b	352	cmdline_error("the -pw option can only be used with the "
01ccff1b	353	"SSH protocol");
4858529b	354	else {
	355	cmdline_password = dupstr(value);
	356	/* Assuming that `value' is directly from argv, make a good faith
	357	* attempt to trample it, to stop it showing up in `ps' output
	358	* on Unix-like systems. Not guaranteed, of course. */
	359	memset(value, 0, strlen(value));
	360	}
dfe3332b	361	}
dfe3332b	362
973612f5	363	if (!strcmp(p, "-agent") \|\| !strcmp(p, "-pagent") \|\|
	364	!strcmp(p, "-pageant")) {
	365	RETURN(1);
	366	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
a3a48ced	367	SAVEABLE(0);
973612f5	368	cfg->tryagent = TRUE;
	369	}
	370	if (!strcmp(p, "-noagent") \|\| !strcmp(p, "-nopagent") \|\|
	371	!strcmp(p, "-nopageant")) {
	372	RETURN(1);
	373	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
a3a48ced	374	SAVEABLE(0);
973612f5	375	cfg->tryagent = FALSE;
	376	}
	377
dfe3332b	378	if (!strcmp(p, "-A")) {
dfe3332b	379	RETURN(1);
46a3419b	380	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	381	SAVEABLE(0);
5555d393	382	cfg->agentfwd = 1;
dfe3332b	383	}
	384	if (!strcmp(p, "-a")) {
	385	RETURN(1);
46a3419b	386	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	387	SAVEABLE(0);
5555d393	388	cfg->agentfwd = 0;
dfe3332b	389	}
	390
	391	if (!strcmp(p, "-X")) {
	392	RETURN(1);
46a3419b	393	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	394	SAVEABLE(0);
5555d393	395	cfg->x11_forward = 1;
dfe3332b	396	}
	397	if (!strcmp(p, "-x")) {
	398	RETURN(1);
46a3419b	399	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
c725e24c	400	SAVEABLE(0);
5555d393	401	cfg->x11_forward = 0;
dfe3332b	402	}
	403
	404	if (!strcmp(p, "-t")) {
	405	RETURN(1);
46a3419b	406	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
e7cf9486	407	SAVEABLE(1); /* lower priority than -m */
5555d393	408	cfg->nopty = 0;
dfe3332b	409	}
	410	if (!strcmp(p, "-T")) {
	411	RETURN(1);
46a3419b	412	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
e7cf9486	413	SAVEABLE(1);
5555d393	414	cfg->nopty = 1;
dfe3332b	415	}
dfe3332b	416
0ed48730	417	if (!strcmp(p, "-N")) {
	418	RETURN(1);
	419	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
	420	SAVEABLE(0);
	421	cfg->ssh_no_shell = 1;
	422	}
	423
dfe3332b	424	if (!strcmp(p, "-C")) {
dfe3332b	425	RETURN(1);
46a3419b	426	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
c725e24c	427	SAVEABLE(0);
5555d393	428	cfg->compression = 1;
dfe3332b	429	}
	430
	431	if (!strcmp(p, "-1")) {
	432	RETURN(1);
46a3419b	433	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
c725e24c	434	SAVEABLE(0);
5555d393	435	cfg->sshprot = 0; /* ssh protocol 1 only */
dfe3332b	436	}
	437	if (!strcmp(p, "-2")) {
	438	RETURN(1);
46a3419b	439	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
c725e24c	440	SAVEABLE(0);
5555d393	441	cfg->sshprot = 3; /* ssh protocol 2 only */
dfe3332b	442	}
	443
	444	if (!strcmp(p, "-i")) {
	445	RETURN(2);
46a3419b	446	UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
c725e24c	447	SAVEABLE(0);
9a30e26b	448	cfg->keyfile = filename_from_str(value);
dfe3332b	449	}
dfe3332b	450
05581745	451	if (!strcmp(p, "-4") \|\| !strcmp(p, "-ipv4")) {
	452	RETURN(1);
	453	SAVEABLE(1);
	454	cfg->addressfamily = ADDRTYPE_IPV4;
	455	}
	456	if (!strcmp(p, "-6") \|\| !strcmp(p, "-ipv6")) {
	457	RETURN(1);
	458	SAVEABLE(1);
	459	cfg->addressfamily = ADDRTYPE_IPV6;
	460	}
9621bbab	461	if (!strcmp(p, "-sercfg")) {
	462	char* nextitem;
	463	RETURN(2);
	464	UNAVAILABLE_IN(TOOLTYPE_FILETRANSFER \| TOOLTYPE_NONNETWORK);
	465	SAVEABLE(1);
	466	if (cfg->protocol != PROT_SERIAL)
	467	cmdline_error("the -sercfg option can only be used with the "
	468	"serial protocol");
	469	/* Value[0] contains one or more , separated values, like 19200,8,n,1,X */
	470	nextitem = value;
	471	while (nextitem[0] != '\0') {
	472	int length, skip;
	473	char *end = strchr(nextitem, ',');
	474	if (!end) {
	475	length = strlen(nextitem);
	476	skip = 0;
	477	} else {
	478	length = end - nextitem;
	479	nextitem[length] = '\0';
	480	skip = 1;
	481	}
	482	if (length == 1) {
	483	switch (*nextitem) {
	484	case '1':
	485	cfg->serstopbits = 2;
	486	break;
	487	case '2':
	488	cfg->serstopbits = 4;
	489	break;
	490
	491	case '5':
	492	cfg->serdatabits = 5;
	493	break;
	494	case '6':
	495	cfg->serdatabits = 6;
	496	break;
	497	case '7':
	498	cfg->serdatabits = 7;
	499	break;
	500	case '8':
	501	cfg->serdatabits = 8;
	502	break;
	503	case '9':
	504	cfg->serdatabits = 9;
	505	break;
	506
	507	case 'n':
	508	cfg->serparity = SER_PAR_NONE;
	509	break;
	510	case 'o':
	511	cfg->serparity = SER_PAR_ODD;
	512	break;
	513	case 'e':
	514	cfg->serparity = SER_PAR_EVEN;
	515	break;
	516	case 'm':
	517	cfg->serparity = SER_PAR_MARK;
	518	break;
	519	case 's':
	520	cfg->serparity = SER_PAR_SPACE;
	521	break;
	522
	523	case 'N':
	524	cfg->serflow = SER_FLOW_NONE;
525	break;
526	case 'X':
527	cfg->serflow = SER_FLOW_XONXOFF;
528	break;
529	case 'R':
530	cfg->serflow = SER_FLOW_RTSCTS;
531	break;
532	case 'D':
533	cfg->serflow = SER_FLOW_DSRDTR;
534	break;
535
536	default:
537	cmdline_error("Unrecognised suboption \"-sercfg %c\"",
538	*nextitem);
539	}
540	} else if (length == 3 && !strncmp(nextitem,"1.5",3)) {
541	/* Messy special case */
542	cfg->serstopbits = 3;
543	} else {
544	int serspeed = atoi(nextitem);
545	if (serspeed != 0) {
546	cfg->serspeed = serspeed;
547	} else {
548	cmdline_error("Unrecognised suboption \"-sercfg %s\"",
549	nextitem);
550	}
551	}
552	nextitem += length + skip;
553	}
554	}
dfe3332b	555	return ret; /* unrecognised */
	556	}
	557
5555d393	558	void cmdline_run_saved(Config *cfg)
dfe3332b	559	{
	560	int pri, i;
	561	for (pri = 0; pri < NPRIORITIES; pri++)
	562	for (i = 0; i < saves[pri].nsaved; i++)
	563	cmdline_process_param(saves[pri].params[i].p,
5555d393	564	saves[pri].params[i].value, 0, cfg);
dfe3332b	565	}