1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
/*
* Copyright 2006,2008 Nick White
*
* This file is part of GetHT
*
* GetHT is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GetHT is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GetHT. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <curl/curl.h>
#include <curl/types.h>
#include <curl/easy.h>
#include "getht.h"
#include "issue.h"
int read_func(void *ptr, size_t size, size_t nmemb, FILE *stream)
{ return fread(ptr, size, nmemb, stream); }
int write_func(void *ptr, size_t size, size_t nmemb, FILE *stream)
{ return fwrite(ptr, size, nmemb, stream); }
int update_progress(void *data, double dltotal, double dlnow,
double ultotal, double ulnow);
extern int proxy_type;
extern char proxy_addr[STR_MAX];
extern long proxy_port;
extern int proxy_auth;
extern char proxy_user[STR_MAX];
extern char proxy_pass[STR_MAX];
extern CURL *main_curl_handle;
int save_file(CURL *curl_handle, char *uri, char *filepath, long resume_offset)
/* Save the file *uri to *filepath */
{
printf("Downloading %s\n",uri);
if(!curl_handle)
curl_handle = main_curl_handle;
if(curl_handle) {
FILE *file;
file = fopen(filepath, "a");
if(!file)
{
fprintf(stderr,"Error: cannot open file %s for writing.\n",filepath);
return 1;
}
curl_easy_setopt(curl_handle, CURLOPT_URL, uri);
curl_easy_setopt(curl_handle, CURLOPT_READFUNCTION, read_func);
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_func);
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, file);
if(proxy_type)
{
curl_easy_setopt(curl_handle, CURLOPT_PROXYTYPE, proxy_type);
curl_easy_setopt(curl_handle, CURLOPT_PROXY, proxy_addr);
if(proxy_port)
curl_easy_setopt(curl_handle, CURLOPT_PROXYPORT, proxy_port);
if(proxy_auth)
curl_easy_setopt(curl_handle, CURLOPT_PROXYAUTH, proxy_auth);
if(proxy_user[0] && proxy_pass[0])
{
char userpass[STR_MAX];
snprintf(userpass, STR_MAX, "%s:%s", proxy_user, proxy_pass);
curl_easy_setopt(curl_handle, CURLOPT_PROXYUSERPWD, userpass);
}
}
curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 0);
curl_easy_setopt(curl_handle, CURLOPT_PROGRESSFUNCTION, update_progress);
curl_easy_setopt(curl_handle, CURLOPT_PROGRESSDATA, &resume_offset);
curl_easy_setopt(curl_handle, CURLOPT_RESUME_FROM, resume_offset);
/* create a buffer to hold any curl errors */
char errorinfo[CURL_ERROR_SIZE];
curl_easy_setopt(curl_handle, CURLOPT_ERRORBUFFER, errorinfo);
if(curl_easy_perform(curl_handle))
{
remove(filepath);
fprintf(stderr,"\nError, could not download %s: %s\n",uri, errorinfo);
return 1;
}
fclose(file);
printf("\n");
}
else {
fprintf(stderr,"Error: curl failed to initialise.\n");
printf("Could not download %s\n",uri);
return 1;
}
return 0;
}
int update_progress(void *data, double dltotal, double dlnow,
double ultotal, double ulnow)
/* Print status information */
{
double frac;
long *startsize = NULL;
startsize = (long *)data;
long cur = (long) dlnow + *startsize;
long total = (long) dltotal + *startsize;
if(cur > 0)
frac = 100 * (double) cur / (double) total;
else
frac = 0;
printf("\rDownload progress: %3.0lf%% ", frac);
fflush(stdout);
return 0;
}
double getremotefilesize(CURL *curl_handle, char *uri)
{
double filesize;
if(!curl_handle)
curl_handle = main_curl_handle;
if(curl_handle) {
curl_easy_setopt(curl_handle, CURLOPT_URL, uri);
curl_easy_setopt(curl_handle, CURLOPT_READFUNCTION, read_func);
/* don't download or return either body or header */
curl_easy_setopt(curl_handle, CURLOPT_NOBODY, 1);
curl_easy_setopt(curl_handle, CURLOPT_HEADER, 0);
if(proxy_type)
{
curl_easy_setopt(curl_handle, CURLOPT_PROXYTYPE, proxy_type);
curl_easy_setopt(curl_handle, CURLOPT_PROXY, proxy_addr);
if(proxy_port)
curl_easy_setopt(curl_handle, CURLOPT_PROXYPORT, proxy_port);
if(proxy_auth)
curl_easy_setopt(curl_handle, CURLOPT_PROXYAUTH, proxy_auth);
if(proxy_user[0] && proxy_pass[0])
{
char userpass[STR_MAX];
snprintf(userpass, STR_MAX, "%s:%s", proxy_user, proxy_pass);
curl_easy_setopt(curl_handle, CURLOPT_PROXYUSERPWD, userpass);
}
}
curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1);
if(curl_easy_perform(curl_handle))
filesize = -1;
curl_easy_getinfo(curl_handle, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &filesize);
}
else
filesize = -1;
curl_easy_reset(curl_handle);
return filesize;
}
void downloadissue(CURL *curl_handle, char * directory, iss * issue, int force)
/* Download issue pointed to */
{
sec * cur_section;
char newdir[STR_MAX];
char filename[STR_MAX];
FILE * testfile;
snprintf(newdir,STR_MAX,"%s/%i_%i-%i",directory,
issue->date.year,issue->date.firstmonth,issue->date.lastmonth);
printf("Downloading issue entitled '%s' to '%s'\n",issue->title,newdir);
if(!opendir(newdir))
if(mkdir(newdir, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH))
{
printf("Please enter the path of a directory to save issues in: ");
scanf("%s", newdir);
}
int count;
for(count = 0; count <= issue->no_of_sections; count++)
{
cur_section = issue->section[count];
snprintf(filename,STR_MAX,"%s/section_%i.pdf", newdir, cur_section->number);
if(!force){
struct stat fileinfo;
/* see if local file exists */
if(stat(filename, &fileinfo))
save_file(curl_handle, cur_section->uri, filename, 0);
else
{
/* get size of local file */
long localsize = 0;
localsize = (long) fileinfo.st_size;
/* get size of remote file */
long remotesize = 0;
remotesize = (long) getremotefilesize(curl_handle, cur_section->uri);
/* if size of local file != size of remote file, resume */
if(remotesize > 0 && localsize < remotesize)
save_file(curl_handle, cur_section->uri, filename, localsize);
else
printf("Skipping download of completed section %i\n", cur_section->number);
}
}
else
save_file(curl_handle, cur_section->uri, filename, 0);
}
}
|
