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76 lines
2.2 KiB
Go
76 lines
2.2 KiB
Go
package core
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import (
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"net/url"
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"path"
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"strings"
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)
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var (
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// getRequestPaths points to either of the getRequestPath____ functions
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getRequestPath func(string) *Path
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)
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// ParseURLEncodedRequest takes a received string and safely parses a request from this
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func ParseURLEncodedRequest(received string) (*Request, Error) {
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// Check for ASCII control bytes
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for i := 0; i < len(received); i++ {
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if received[i] < ' ' || received[i] == 0x7f {
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return nil, NewError(InvalidRequestErr)
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}
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}
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// Split into 2 substrings by '?'. URL path and query
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rawPath, params := splitBy(received, "?")
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// Unescape path
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rawPath, err := url.PathUnescape(rawPath)
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if err != nil {
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return nil, WrapError(InvalidRequestErr, err)
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}
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// Return new request
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return &Request{getRequestPath(rawPath), params}, nil
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}
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// ParseInternalRequest parses an internal request string based on the current directory
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func ParseInternalRequest(p *Path, line string) *Request {
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rawPath, params := splitBy(line, "?")
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if path.IsAbs(rawPath) {
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return &Request{getRequestPath(rawPath), params}
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}
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return &Request{newSanitizedPath(p.Root(), rawPath), params}
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}
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// getRequestPathUserDirEnabled creates a Path object from raw path, converting ~USER to user subdirectory roots, else at server root
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func getRequestPathUserDirEnabled(rawPath string) *Path {
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if userPath := strings.TrimPrefix(rawPath, "/"); strings.HasPrefix(userPath, "~") {
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// We found a user path! Split into the user part, and remaining path
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user, remaining := splitBy(userPath, "/")
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// Empty user, we been duped! Return server root
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if len(user) <= 1 {
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return &Path{Root, "", "/"}
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}
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// Get sanitized user root, else return server root
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root, ok := sanitizeUserRoot(path.Join("/home", user[1:], userDir))
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if !ok {
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return &Path{Root, "", "/"}
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}
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// Build new Path
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rel := sanitizeRawPath(root, remaining)
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sel := "/~" + user[1:] + formatSelector(rel)
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return &Path{root, rel, sel}
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}
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// Return regular server root + rawPath
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return newSanitizedPath(Root, rawPath)
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}
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// getRequestPathUserDirDisabled creates a Path object from raw path, always at server root
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func getRequestPathUserDirDisabled(rawPath string) *Path {
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return newSanitizedPath(Root, rawPath)
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}
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