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1 #ifndef KNETFILE_H
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2 #define KNETFILE_H
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3
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4 #include <stdint.h>
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5 #include <fcntl.h>
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6
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7 #ifndef _WIN32
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8 #define netread(fd, ptr, len) read(fd, ptr, len)
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9 #define netwrite(fd, ptr, len) write(fd, ptr, len)
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10 #define netclose(fd) close(fd)
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11 #else
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12 #include <winsock2.h>
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13 #define netread(fd, ptr, len) recv(fd, ptr, len, 0)
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14 #define netwrite(fd, ptr, len) send(fd, ptr, len, 0)
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15 #define netclose(fd) closesocket(fd)
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16 #endif
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17
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18 // FIXME: currently I/O is unbuffered
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19
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20 #define KNF_TYPE_LOCAL 1
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21 #define KNF_TYPE_FTP 2
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22 #define KNF_TYPE_HTTP 3
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23
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24 typedef struct knetFile_s {
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25 int type, fd;
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26 int64_t offset;
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27 char *host, *port;
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28
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29 // the following are for FTP only
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30 int ctrl_fd, pasv_ip[4], pasv_port, max_response, no_reconnect, is_ready;
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31 char *response, *retr, *size_cmd;
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32 int64_t seek_offset; // for lazy seek
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33 int64_t file_size;
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34
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35 // the following are for HTTP only
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36 char *path, *http_host;
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37 } knetFile;
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38
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39 #define knet_tell(fp) ((fp)->offset)
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40 #define knet_fileno(fp) ((fp)->fd)
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41
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42 #ifdef __cplusplus
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43 extern "C" {
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44 #endif
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45
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46 #ifdef _WIN32
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47 int knet_win32_init();
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48 void knet_win32_destroy();
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49 #endif
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50
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51 knetFile *knet_open(const char *fn, const char *mode);
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52
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53 /*
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54 This only works with local files.
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55 */
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56 knetFile *knet_dopen(int fd, const char *mode);
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57
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58 /*
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59 If ->is_ready==0, this routine updates ->fd; otherwise, it simply
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60 reads from ->fd.
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61 */
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62 off_t knet_read(knetFile *fp, void *buf, off_t len);
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63
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64 /*
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65 This routine only sets ->offset and ->is_ready=0. It does not
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66 communicate with the FTP server.
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67 */
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68 off_t knet_seek(knetFile *fp, int64_t off, int whence);
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69 int knet_close(knetFile *fp);
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70
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71 #ifdef __cplusplus
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72 }
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73 #endif
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74
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75 #endif
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