Inetc plug-in

Author: Takhir (talk, contrib)

Links

Download:
Inetc.zip (81 KB)

Forum thread

Description

Internet client plug-in for files download and upload. Based on the InetLoad plug-in. Network implementation uses MS WinInet API, supports http/https and ftp protocols. Plugin has better proxy support compare to NSISdl plug-in. Command line may include few URL/File pairs to be transfered. If server or proxy login/password are not setten in the script, displays IE-style authentication dialog (except silent mode). Plug-in supports 3 "transfer in progress" display modes:

1. old NSISdl style - additional embedded progress bar and text on the INSTFILES page;
2. POPUP dialog mode with detailed info;
3. BANNER mode with simple popup window.

Plug-in recognizes Installer's Silent mode and this case hides any output (this feature requires NSIS 2.03 or later). Program implements simple re-get functionality - host reconnect and download from current position after short pause. While program depends on IE settings, it changes current IE mode to online. NSISdl code fragment was used for progress bar displaying in the "old style" mode. For ftp use "host/path" for file location relative to user's home dir and "host//path" for absolute path.

Command line

Plug-in DLL functions (entry points): get, post, head, put

get DLL Function

inetc::get [/PROXY IP:PORT] [/USERNAME PROXY_LOGIN /PASSWORD PROXY_PASSWD]
 [/NOPROXY] [/NOCANCEL] [/TIMEOUT INT_MS] [/SILENT] [/CAPTION TEXT]
 [/RESUME RETRY_QUESTION] [/POPUP | /BANNER TEXT] [/CANCELTEXT CANCEL_TEXT]
 [/USER_AGENT USER_AGENT_TEXT] [/HEADER HEADER_TEXT] [/TRANSLATE LANG_PARAMS]
 URL1 local_file1 [URL2 local_file2 [...]] [/END]

This call returns "OK" string if successful, error description string if failed (see included InetLoad.cpp file for a full set of status strings). Usage and result processing samples are included to the package.

/PROXY

Overwrites current proxy settings, not required in most cases. IE settings will be used by default.

/USERNAME

Proxy username (http only).

/PASSWORD

Proxy password (http only). For server (http/ftp) authentication it is possible to use URL encoded name and password, for example http://username:password@nsis.sourceforge.net.

/NOPROXY

Disables proxy settings for this connection (if any)

/NOCANCEL

Prevents download from being interrupted by user (locks Esc, Alt-F4, Cancel handling)

/TIMEOUT

Sets INTERNET_OPTION_CONNECT_TIMEOUT, milliseconds, default - IE current parameter value.

/SILENT

Key hides plug-in' output (both popup dialog and embedded progress bar). Not required if 'SilentInstall silent' mode was defined in script (NSIS 2.03 or later).

/RESUME

On the permanent connection/transfer error instead of exit first displays message box with "resume download" question. Useful for dial-up connections and big files - allows user to restore connection and resume download. Default is "Your internet connection seems to have dropped out!\nPlease reconnect and click Retry to resume downloading...".

/CAPTION

Defines caption text for /BANNER mode, caption prefix (left of '-') for /POPUP mode and caption for RESUME MessageBox. Default is "InetLoad plug-in" if not set or "".

/POPUP

This mode displays detailed download dialog instead of embedded progress bar. Also useful in .onInit function (i.e. not in Section).

/BANNER

Displays simple popup dialog (MSI Banner mode) and sets dialog TEXT (up to 3 lines using $\n).

/CANCELTEXT

Text for the Cancel button in the NSISdl mode. Default is NSIS dialog Cancel button text (current lang).

/USERAGENT

UserAgent http request header value. Default is "NSIS_Inetc (Mozilla)".

/HEADER

Adds or replaces http request header. Common HEADER_TEXT format is "header: value".

/END

Allows to limit plug-in stack reading (optional, required if you stores other vars in the stack).

/TRANSLATE

Allows translating plug-in text in the POPUP or "old style" (NSISdl) modes (see Readme for parameters). In the BANNER mode text is also customizable.

post DLL Function

inetc::post TEXT2POST [/PROXY IP:PORT] [/USERNAME PROXY_LOGIN  /PASSWORD PROXY_PASSWD]
 [/NOPROXY] [/NOCANCEL] [/TIMEOUT INT_MS] [/SILENT]
 [/CAPTION TEXT] [/POPUP | /BANNER TEXT] [/CANCELTEXT CANCEL_TEXT]
 [/USER_AGENT USER_AGENT_TEXT] [/TRANSLATE LANG_PARAMS]
 URL1 local_file1 [URL2 local_file2 [...]] [/END]

Sets POST http mode and defines text string to be used in the POST (http only). Disables auto re-get. No char replaces used (%20 and others).

head DLL Function

The same as get, but requests http headers only. Writes raw headers to file.

put DLL Function

inetc::put [/PROXY IP:PORT] [/USERNAME PROXY_LOGIN /PASSWORD PROXY_PASSWD] [/NOPROXY]
 [/NOCANCEL] [/TIMEOUT INT_MS] [/SILENT] [/CAPTION TEXT] [/POPUP | /BANNER TEXT] 
 [/CANCELTEXT CANCEL_TEXT] [/USER_AGENT USER_AGENT_TEXT] [/TRANSLATE LANG_PARAMS]
 URL1 local_file1 [URL2 local_file2 [...]] [/END]

Return value and parameters (if applicable) are the same as for previous entry point.

Examples

inetc::get "http://dl.zvuki.ru/6306/mp3/12.mp3" "$EXEDIR\12.mp3" \
               "ftp://dl.zvuki.ru/6306/mp3/11.mp3" "$EXEDIR\11.mp3"
Pop $0

inetc::put /BANNER "Cameron Diaz upload in progress..." \
"http://www.dreamgirlswallpaper.co.uk/fiveyearsonline/wallpaper/Cameron_Diaz/camerond09big.JPG" \
"$EXEDIR\cd.jpg"
  Pop $0
  StrCmp $0 "OK" dlok
  MessageBox MB_OK|MB_ICONEXCLAMATION "http upload Error, click OK to abort installation" /SD IDOK
  Abort
dlok:
  ...

Credits

Many thanks to Backland who offered a simple way to fix NSISdl mode crashes, added 'center parent' function, offers few nice design ideas and spent a lot of time testing the plug-in.