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1 | /* |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
4 | * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
932f8f22 GB |
22 | #include <stdio.h> |
23 | #include <errno.h> | |
24 | #include <gtk/gtk.h> | |
25 | #include <sys/stat.h> | |
26 | #include <sys/types.h> | |
27 | ||
85611cd9 GB |
28 | #include "download.h" |
29 | #include "http.h" | |
30 | ||
932f8f22 GB |
31 | #ifdef WINDOWS |
32 | ||
33 | #include <io.h> | |
34 | #define access(a,b) _access(a,b) | |
35 | #define close(a) closesocket(a) | |
36 | ||
37 | char *dirname ( char * dir ) | |
38 | { | |
39 | char *tmp = dir + strlen(dir) - 1; | |
40 | while ( tmp != dir && *tmp != '\\' ) | |
41 | tmp--; | |
42 | *tmp = '\0'; | |
43 | return dir; | |
44 | } | |
45 | ||
46 | #else | |
47 | ||
48 | #include <unistd.h> | |
49 | #include <sys/types.h> | |
50 | ||
51 | /* dirname */ | |
52 | #include <libgen.h> | |
53 | ||
54 | #endif | |
55 | ||
56 | static int download( const char *hostname, const char *uri, const char *fn, int sendhostname) | |
57 | { | |
58 | FILE *f; | |
59 | int ret; | |
60 | ||
61 | /* Check file */ | |
62 | if ( access ( fn, F_OK ) == 0 ) | |
63 | { | |
64 | /* File exists: return */ | |
65 | return -3; | |
66 | } else { | |
67 | if ( errno == ENOENT) | |
68 | { | |
69 | char *tmp = g_strdup ( fn ); | |
70 | #ifdef WINDOWS | |
71 | mkdir( dirname ( dirname ( tmp ) ) ); | |
72 | g_free ( tmp ); tmp = g_strdup ( fn ); | |
73 | mkdir( dirname ( tmp ) ); | |
74 | #else | |
75 | mkdir( dirname ( dirname ( tmp ) ), 0777 ); | |
76 | g_free ( tmp ); tmp = g_strdup ( fn ); | |
77 | mkdir( dirname ( tmp ), 0777 ); | |
78 | #endif | |
79 | g_free ( tmp ); | |
80 | } | |
81 | if ( ! (f = fopen ( fn, "w+b" )) ) /* immediately open file so other threads won't -- prevents race condition */ | |
82 | return -4; | |
83 | } | |
84 | ||
85 | /* Call the backend function */ | |
86 | ret = http_download_get_url ( hostname, uri, f, 0, sendhostname ); | |
87 | ||
88 | if (ret == -1 || ret == 1 || ret == -2) | |
89 | { | |
90 | fclose ( f ); | |
91 | remove ( fn ); | |
92 | return -1; | |
93 | } | |
94 | ||
95 | fclose ( f ); | |
96 | return ret; | |
97 | } | |
98 | ||
85611cd9 GB |
99 | /* success = 0, -1 = couldn't connect, -2 HTTP error, -3 file exists, -4 couldn't write to file... */ |
100 | /* uri: like "/uri.html?whatever" */ | |
101 | /* only reason for the "wrapper" is so we can do redirects. */ | |
102 | int a_http_download_get_url ( const char *hostname, const char *uri, const char *fn ) | |
103 | { | |
932f8f22 | 104 | return download ( hostname, uri, fn, 1 ); |
85611cd9 GB |
105 | } |
106 | ||
107 | int a_http_download_get_url_nohostname ( const char *hostname, const char *uri, const char *fn ) | |
108 | { | |
932f8f22 | 109 | return download ( hostname, uri, fn, 0 ); |
85611cd9 | 110 | } |