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#ifndef IMAPFILTER_H |
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#define IMAPFILTER_H |
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|
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#include <stdio.h> |
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#include <unistd.h> |
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#include <sys/stat.h> |
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#include <sys/types.h> |
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#include <dirent.h> |
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|
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#include "config.h" |
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|
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#ifdef SSL_TLS |
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#include <openssl/ssl.h> |
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#include <openssl/x509.h> |
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#endif |
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|
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#ifndef DATA_H |
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#include "data.h" |
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#endif |
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|
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/* Program's version number. */ |
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#define IMAPFILTER_VERSION "0.8.7" |
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|
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/* Error codes returned by functions. */ |
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#define ERROR_SIGNAL 1 |
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#define ERROR_TRIVIAL 2 |
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#define ERROR_FILE_OPEN 3 |
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#define ERROR_LOCKFILE 4 |
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#define ERROR_CONFIG_PARSE 5 |
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#define ERROR_MEMORY_ALLOCATION 6 |
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#define ERROR_SETUID 7 |
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#define ERROR_TERMIO 8 |
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#define ERROR_NETWORK 9 |
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#define ERROR_SSL 10 |
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#define ERROR_PASSPHRASE 11 |
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#define ERROR_ENCRYPT 12 |
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#define ERROR_DECRYPT 13 |
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#define ERROR_FORK 14 |
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#define ERROR_UNDEFINED 15 |
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|
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/* SSL/TLS certificate status for the server. */ |
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#define SSL_CERT_OK 0 |
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#define SSL_CERT_NONEXISTENT 1 |
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#define SSL_CERT_MISMATCH 2 |
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|
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/* Action to be applied, concerning the SSL/TLS certificate. */ |
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#define SSL_CERT_ACTION_ACCEPT 0 |
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#define SSL_CERT_ACTION_REJECT 1 |
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#define SSL_CERT_ACTION_CONTINUE 0 |
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#define SSL_CERT_ACTION_ABORT 1 |
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|
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/* Flags that control the program's execution options. */ |
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#define OPTION_DETAILS_QUIET 0x0001 |
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#define OPTION_DETAILS_NORMAL 0x0002 |
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#define OPTION_DETAILS_VERBOSE 0x0004 |
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#define OPTION_DETAILS_CLEAR 0xfff8 |
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#define OPTION_ERRORS 0x0008 |
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#define OPTION_EXPUNGE 0x0010 |
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#define OPTION_HEADERS 0x0020 |
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#define OPTION_NAMESPACE 0x0040 |
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#define OPTION_SUBSCRIBE 0x0080 |
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#define OPTION_WARNING 0x0100 |
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#define OPTION_PASSWORD_EDITOR 0x0200 |
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#define OPTION_DAEMON_MODE 0x0400 |
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|
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/* Other flags. */ |
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#define FLAG_DAEMON_MODE 0x01 |
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#define FLAG_TTY 0x02 |
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#define FLAG_TTY_MODIFIED 0x04 |
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#define FLAG_BLANK_PASSWORD 0x08 |
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#define FLAG_SIGHUP_RECEIVED 0x10 |
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|
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/* Capabilities of mail server. */ |
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#define CAPABILITY_NONE 0x00 |
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#define CAPABILITY_NAMESPACE 0x01 |
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|
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/* Flags for logger. */ |
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#define LOG_PREAMBLE 0 |
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#define LOG_ACCOUNT 1 |
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#define LOG_MAILBOX 2 |
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#define LOG_FILTER 3 |
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#define LOG_ACTION 4 |
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#define LOG_DESTINATION_ACCOUNT 5 |
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#define LOG_DESTINATION_MAILBOX 6 |
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#define LOG_HEADER 7 |
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|
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/* Buffer size of the IMAP command. */ |
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#define SMALL_CMD 64 |
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#define MEDIUM_CMD 512 |
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#define BIG_CMD 32768 |
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|
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/* Store IMAP command type may replace,add or remove flags. */ |
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#define STORE_FLAG_REPLACE 1 |
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#define STORE_FLAG_ADD 2 |
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#define STORE_FLAG_REMOVE 3 |
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|
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/* Buffer size of server's response. */ |
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#define RESPONSE_BUF 4096 |
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#define RESULT_BUF 512 |
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|
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/* Response codes. */ |
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#define RESPONSE_NULLBODY -2 |
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#define RESPONSE_NONE -1 |
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#define RESPONSE_OK 0 |
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#define RESPONSE_NO 1 |
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#define RESPONSE_BAD 2 |
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#define RESPONSE_BYE 3 |
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#define RESPONSE_PREAUTH 4 |
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#define RESPONSE_READONLY 5 |
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#define RESPONSE_TRYCREATE 6 |
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|
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/* Size virtual buffer. */ |
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#define VIRTUAL_BUF 4096 |
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|
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/* Authentication mechanisms string. */ |
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#define AUTH_MECH_LEN 512 |
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|
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/* Length of mailbox namespace prefix. */ |
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#define NAMESPACE_PREFIX_LEN 64 |
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|
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/* Encryption and decryption buffers. */ |
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#define ENCRYPTION_BUF 1024 |
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#define DECRYPTION_BUF 4096 |
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|
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/* Buffer to save flags of the store IMAP command. */ |
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#define STORE_FLAGS_BUF 64 |
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|
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/* Maximum passwords the password editor can handle. */ |
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#define EDITOR_PASSWORDS_MAX 64 |
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|
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/* Lenght of charset for IMAP SEARCH requests. */ |
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#define CHARSET_LEN 64 |
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|
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|
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#define min(A, B) ((A) < (B) ? (A) : (B)) |
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#define plural(A) ((A) == 1 ? "" : "s") |
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|
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|
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/* Secure memory information. */ |
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typedef struct secmem { |
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void *buf; /* Allocated memory buffer. */ |
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size_t size; /* Size of the buffer. */ |
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struct secmem *prev, *next; /* Previous/next node of doubly linked |
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* list. */ |
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} secmem_t; |
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|
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|
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/* Namespace of IMAP mailboxes. */ |
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typedef struct namesp { |
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char prefix[NAMESPACE_PREFIX_LEN]; |
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char delim; |
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} namesp_t; |
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|
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|
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/* file.c */ |
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int read_config(char *cfg); |
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int parse_config(FILE * fd); |
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void reread_config(char *cfg); |
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void set_options(char *line, regmatch_t * match); |
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|
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int read_passwords(void); |
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int parse_passwords(FILE * fd); |
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int store_passwords(account_t * accts[]); |
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|
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int create_homedir(void); |
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int exists_file(char *fname); |
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int exists_dir(char *fname); |
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int create_file(char *fname, mode_t mode); |
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|
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#ifdef CHECK_PERMISSIONS |
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int check_file_perms(char *fname, mode_t mode); |
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int check_dir_perms(char *dname, mode_t mode); |
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|
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#endif |
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|
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#ifdef SSL_TLS |
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int imf_ssl_cert(SSL * ssl); |
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int imf_ssl_check_cert(X509 * pcert, unsigned char *pmd, unsigned int *pmdlen); |
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void imf_ssl_print_cert(X509 * cert, unsigned char *md, unsigned int *mdlen); |
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int imf_ssl_new_cert(X509 * cert); |
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int imf_ssl_cert_mismatch(void); |
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|
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#endif |
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|
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/* imapfilter.c */ |
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void usage(void); |
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void version(void); |
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|
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/* imap.c */ |
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unsigned int send_command(int *sock, char *cmd); |
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|
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#ifdef DEBUG |
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int imap_noop(int *sock); |
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|
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#endif |
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int imap_capability(int *sock); |
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int imap_namespace(int *sock); |
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int imap_logout(int *sock); |
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int imap_authenticate(int *sock, char *auth); |
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int imap_login(int *sock, char *user, char *pass); |
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|
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/* int imap_list(int *sock, char *refer, char *mbox); */ |
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int imap_subscribe(int *sock, char *mbox); |
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|
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/* int imap_examine(int *sock, char *mbox); */ |
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int imap_select(int *sock, char *mbox); |
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int imap_status(int *sock, char *mbox, char *items); |
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int imap_create(int *sock, char *mbox); |
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int imap_search(int *sock, char *charset, char *search); |
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int imap_fetch(int *sock, char *mesg, char *items); |
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int imap_store(int *sock, char *mesg, unsigned int mode, char *flags); |
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int imap_copy(int *sock, char *mesg, char *mbox); |
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int imap_append(int *sock, char *mbox, unsigned int size); |
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int imap_close(int *sock); |
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int imap_expunge(int *sock); |
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|
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/* lock.c */ |
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void lockfile_create(void); |
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void lockfile_check(void); |
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pid_t lockfile_pid(void); |
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int lockfile_remove(void); |
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void kill_imapfilter(void); |
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|
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/* log.c */ |
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void info(const char *info,...); |
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void verbose(const char *info,...); |
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void error(const char *errmsg,...); |
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void fatal(unsigned int errnum, const char *fatal,...); |
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void catch_signals(void); |
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void signal_handler(int sig); |
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int open_logfile(void); |
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int create_logfile(void); |
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int close_logfile(void); |
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void log_info(int flag, void *ptr); |
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char *get_time(void); |
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|
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/* memory.c */ |
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void *xmalloc(size_t size); |
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void *xrealloc(void *ptr, size_t size); |
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void xfree(void *ptr); |
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char *xstrdup(const char *s); |
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|
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void *smalloc(size_t size); |
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void *srealloc(void *ptr, size_t size); |
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void sfree(void *ptr); |
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char *sstrdup(const char *s); |
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void secmem_append(secmem_t * node); |
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secmem_t *secmem_find(void *ptr); |
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void secmem_remove(secmem_t * node); |
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void secmem_clear(void); |
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|
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#ifdef MEMORY_LOCK |
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void secmem_lock(void); |
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|
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#endif |
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void corefile_disable(void); |
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|
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/* misc.c */ |
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char *strcasestr(const char *haystack, const char *needle); |
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char *ultostr(unsigned long int num, int base); |
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char *xstrncpy(char *dest, const char *src, size_t size); |
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|
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/* passwd.c */ |
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void get_password(char *passwd, size_t pwlen); |
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|
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#ifdef ENCRYPTED_PASSWORDS |
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int encrypt_passwords(FILE * fd, account_t * accts[]); |
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int decrypt_passwords(unsigned char **buf, FILE * fd); |
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void password_editor(void); |
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|
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#endif |
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|
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/* request.c */ |
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int test(int *sock); |
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int check_capabilities(int *sock); |
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int check_namespace(int *sock, namesp_t * nsp); |
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int login(int *sock, char *user, char *pass); |
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int check_mailbox(int *sock, char *mbox); |
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int select_mailbox(int *sock, char *mbox, namesp_t * nsp); |
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int mailbox_status(int *sock, char *mbox, namesp_t * nsp); |
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int close_mailbox(int *sock); |
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int logout(int *sock); |
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|
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int apply_filters(char *mbox, filter_t ** filters); |
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int match_filter(filter_t * filter, char **mesgs); |
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|
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void empty_fifo(mask_t ** mfifo); |
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void queue_fifo(mask_t ** mfifo, mask_t * mask); |
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mask_t *dequeue_fifo(mask_t ** mfifo); |
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|
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char *generate_filter_and(mask_t * mask, unsigned int masknum, unsigned int masklen); |
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char *generate_filter_or(mask_t * mask, unsigned int masknum, unsigned int masklen); |
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|
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int apply_action(char *mbox, char *mesgs, unsigned int *type, account_t * raccount, char *destmbox, unsigned int *msgflags, char *args); |
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int action_delete(char *mesgs, char *args); |
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int action_copy(char *mbox, char *mesgs, char *destmbox, char *args); |
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int action_move(char *mbox, char *mesgs, char *destmbox, char *args); |
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int action_rcopy(char *mbox, char *mesgs, account_t * destacc, char *destmbox, char *args); |
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int action_rmove(char *mbox, char *mesgs, account_t * destacc, char *destmbox, char *args); |
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int action_flag(char *mesgs, unsigned int *type, unsigned int *msgflags, char *args); |
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int action_list(char *mesgs, char *args); |
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|
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unsigned int count_messages(char *mesgs); |
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char *convert_messages(char *mesgs); |
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int substitute_date(char *str); |
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void current_date(char *destmbox); |
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void message_date(char *mesg, char *destmbox); |
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void default_variables(char *mbox, char *destmbox); |
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|
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|
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/* response.c */ |
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void receive_response(int *sock, char *buf); |
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int server_response(int *sock, unsigned int tag); |
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void bye_response(char *buf); |
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int greeting_response(int *sock); |
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int logout_response(int *sock, unsigned int tag); |
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int capability_response(int *sock, unsigned int tag); |
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void auth_mechanisms(void); |
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int namespace_response(int *sock, unsigned int tag, namesp_t * nsp); |
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int status_response(int *sock, unsigned int tag, char *mbox); |
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int select_response(int *sock, unsigned int tag); |
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int search_response(int *sock, unsigned int tag, char **mesgs); |
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int fetch_response(int *sock, unsigned int tag, int reset, char *fetch); |
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int fetchsize_response(int *sock, unsigned int *size, unsigned int tag); |
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int append_response(int *sock, unsigned int tag); |
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int copy_response(int *sock, unsigned int tag); |
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int analyze_response(int *sock, char *buf); |
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void init_vbuf(void); |
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void reset_vbuf(void); |
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void check_vbuf(size_t n); |
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|
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/* socket.c */ |
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int init_connection(int *sock, char *serv, unsigned short int port, unsigned int protocol); |
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int init_ssl_connection(int *sock, unsigned int protocol); |
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int close_connection(int *sock); |
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int socket_read(int *sock, char *buf); |
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int socket_write(int *sock, char *data); |
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|
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/* tty.c */ |
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int tty_store(void); |
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int tty_disable_echo(void); |
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int tty_restore(void); |
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|
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#endif /* IMAPFILTER_H */ |