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bbftp_private_user.c @ 1430

Subversion URL: http://proj.badc.rl.ac.uk/svn/ndg/TI05-delivery/trunk/src/bbftp-client-3.2.0/bbftpc/bbftp_private_user.c@1430

Revision 1430, 9.7 KB checked in by spascoe, 13 years ago (diff)

ALL TEST SUCCEED ON EASTERLY.

A bug in my message passing code, due to me missunderstanding
bbftp_private_send/recv.

Line
1	/*
2	* bbftpc/bbftp_private_user.c
3	* Copyright (C) 1999, 2000, 2001, 2002 IN2P3, CNRS
4	* bbftp@in2p3.fr
5	* http://doc.in2p3.fr/bbftp
6	*
7	* This program is free software; you can redistribute it and/or
8	* modify it under the terms of the GNU General Public License
9	* as published by the Free Software Foundation; either version 2
10	* of the License, or any later version.
11	*
12	* This program is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	* GNU General Public License for more details.
16	*
17	* You should have received a copy of the GNU General Public License
18	* along with this program; if not, write to the Free Software
19	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20	*/
21
22	/****************************************************************************
23
24
25
26	bbftp_private_user.c v 2.1.0 2001/05/21 - Routines creation
27
28	*****************************************************************************/
29
30	#include <bbftp.h>
31
32	#include <stdio.h>
33	#include <stdlib.h>
34	#if HAVE_STRING_H
35	# include <string.h>
36	#endif
37
38	#include <bbftp_private_user.h>
39	#include <client.h>
40	#include <client_proto.h>
41
42	#ifdef NDG_AUTH
43	int ndg_client_auth(char *logmessage);
44	#endif // NDG_PRIVATE_AUTH
45
46	/*
47	** username contain a pointer to the string given with the -u flag
48	*/
49	extern char *username ;
50	/*
51	** privatestr contain a pointer to the string given with the -P flag
52	*/
53	extern char *privatestr ;
54
55	extern int debug;
56
57	/* From bbftp_util.c */
58	void PRINTMESSAGE(FILE strm , int flag, int errcode, int tok, char fmt, ...);
59
60	#ifndef NDG_PYTHON_EMBED
61	/* prototypes */
62	static int ndg_message_recv(char *buffer, int length, char *logmessage);
63	static int ndg_message_send(char buffer, int length, char logmessage);
64	#endif
65
66	/*******************************************************************************
67	** bbftp_private_getargs : *
68	** *
69	** Routine to get arguments for private authentication. This routine is *
70	** called after several tests have been made. The variable to be set are *
71	** to be define in bbftp_private_user.h to be used by other routines. *
72	** *
73	** OUPUT variable : *
74	** logmessage : to write the error message in case of error *
75	** *
76	** GLOBAL VARIABLE USED : *
77	** *
78	** *
79	** RETURN: *
80	** -1 Unrecoverable error *
81	** 0 OK *
82	** *
83	*******************************************************************************/
84
85	int bbftp_private_getargs(char *logmessage)
86	{
87	return 0 ;
88	}
89
90	/*******************************************************************************
91	** bbftp_private_auth : *
92	** *
93	** Routine to do the private authentication. This routine just have to *
94	** send or to receive private data to the bbftpd daemon. For that it will *
95	** use the two routines : *
96	** bbftp_private_send *
97	** bbftp_private_recv *
98	** The reception of the OK or BAD message will be done by the calling *
99	** routine, so if this routine has no check to do (for example just *
100	** sending username and password) it will just call bbftp_private_send *
101	** twice and let the calling program check if it is OK or BAD. *
102	** *
103	** The bbftp_private_send routine has to be called with the following *
104	** parameters: *
105	** *
106	** int bbftp_private_send(char buffertosend,int buffertosendlength,
107	** char logmessage)
108	** char buffertosend = string to be send to the daemon
109	** int buffertosendlength = length of the string *
110	** char logmessage
111	** *
112	** and return 0 in case of success, -1 in case of error with logmessage *
113	** filled *
114	** *
115	** The bbftp_private_recv routine has to be called with the following *
116	** parameters: *
117	** *
118	** int bbftp_private_recv(char buffertorecv,int lengthtoreceive,
119	** char logmessage)
120	** char buffertorecv = buffer to put data received from the
121	** daemon *
122	** int lengthtorecv = length of the buffer *
123	** char logmessage
124	** *
125	** and return number of byte received in case of success, -1 in case of *
126	** error with logmessage filled *
127	** It is the duty of the programmer to be sure that the buffer is large *
128	** enought *
129	** *
130	** *
131	** OUPUT variable : *
132	** logmessage : to write the error message in case of error *
133	** *
134	** GLOBAL VARIABLE USED : *
135	** *
136	** RETURN: *
137	** -1 Unrecoverable error *
138	** 0 OK *
139	** *
140	*******************************************************************************/
141
142	int bbftp_private_auth(char *logmessage)
143	{
144
145	#ifdef NDG_PYTHON_EMBED
146	return ndg_client_auth(logmessage);
147	#else
148	char *msg;
149	char default_privatestr[] = "none";
150	int len;
151
152	/* Send version verification message. */
153	if (ndg_message_send(NDG_HANDSHAKE, strlen(NDG_HANDSHAKE), logmessage) == -1) {
154	return -1;
155	}
156
157	/* Receive response */
158	if (ndg_message_recv(&msg, &len, logmessage) == -1) {
159	return -1;
160	}
161
162	if (debug) {
163	PRINTMESSAGE(stdout,CASE_NORMAL,0,0,"Received Auth handshake: %s\n", msg) ;
164	}
165	free(msg);
166
167	/* Send the privatestr */
168	// If there is no private string, send default
169	if (privatestr == NULL) {
170	privatestr = default_privatestr;
171	}
172
173	if (ndg_message_send(privatestr, strlen(privatestr), logmessage) == -1) {
174	return -1;
175	}
176
177	return 0 ;
178	#endif // NDG_PRIVATE_AUTH
179	}
180
181
182
183	#ifndef NDG_PYTHON_EMBED
184	/*
185	* Higher level message transfer functions.
186	*
187	*/
188
189	/**
190	* Send a message, declaring it's length to the client.
191	*
192	* @param buffer a pointer to the message buffer
193	* @param length the number of bytes to send
194	* @param[out] loggmessage is filled with the error message on error
195	* @return 0 if OK, -1 if error
196	*/
197	static int ndg_message_send(char buffer, int length, char logmessage) {
198	char ctrl[NDG_MESSAGE_LEN];
199
200	sprintf(ctrl, "NDG-msg: %i", length);
201	if (bbftp_private_send(ctrl, NDG_MESSAGE_LEN - 1, logmessage) == -1) {
202	return -1;
203	}
204
205	if (bbftp_private_send(buffer, length, logmessage) == -1) {
206	return -1;
207	}
208
209	return 0;
210	}
211
212	/**
213	* Receive a message of variable length
214	*
215	* @param[out] buffer is set to newly allocated message buffer
216	* @param[out] length is set to the length of the message
217	* @param[out] logmessage is filled with the logmessage on error
218	* @return 0 if OK, -1 if error
219	*/
220	static int ndg_message_recv(char *buffer, int length, char *logmessage) {
221	char ctrl[NDG_MESSAGE_LEN];
222
223	if (bbftp_private_recv(ctrl, NDG_MESSAGE_LEN - 1, logmessage) == -1) {
224	return -1;
225	}
226	if (sscanf(ctrl, "NDG-msg: %i", length) != 1) {
227	sprintf(logmessage, "ndg_message_recv ctrl error: %40s", ctrl);
228	return -1;
229	}
230
231	if ((buffer = (char )malloc((length + 1) sizeof(char))) == NULL) {
232	sprintf(logmessage, "ngd_message_recv malloc error");
233	return -1;
234	}
235
236	if (bbftp_private_recv(buffer, length, logmessage) == -1) {
237	free(*buffer);
238	return -1;
239	}
240
241	return 0;
242	}
243
244	#endif // !NDG_PYTHON_EMBED

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source: TI05-delivery/trunk/src/bbftp-client-3.2.0/bbftpc/bbftp_private_user.c @ 1430

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