summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorGravatar Benjamin Barenblat <bbaren@mit.edu>2015-06-15 17:03:00 -0400
committerGravatar Benjamin Barenblat <bbaren@mit.edu>2015-06-15 17:03:00 -0400
commit14fb20c20b01e3b652a3a228d3c111557fd6e2c4 (patch)
treec552c4c9f3083a56a5633120b5a498c70da39120
Gravatar libraryHEADv1.0.0master
-rw-r--r--.gitignore6
-rw-r--r--LICENSE202
-rw-r--r--gravatar.ur99
-rw-r--r--gravatar.urs60
-rw-r--r--lib.urp6
5 files changed, 373 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..16ece6b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+# -*- conf -*-
+
+# Editor backup files
+*~
+\#*
+.\#*
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright [yyyy] [name of copyright owner]
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
diff --git a/gravatar.ur b/gravatar.ur
new file mode 100644
index 0000000..2ecbdde
--- /dev/null
+++ b/gravatar.ur
@@ -0,0 +1,99 @@
+(* Copyright 2015 the Massachusetts Institute of Technology
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed
+under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License. *)
+
+fun separate_with (sep : string) (xs : list string) : string =
+ List.foldr (fn result x => case x of
+ "" => result
+ | _ => strcat x (strcat sep result))
+ ""
+ xs
+
+structure Options = struct
+ datatype missing_image_response =
+ FourOhFour
+ | MysteryMan
+ | Identicon
+ | Monster
+ | Wavatar
+ | Retro
+ | Blank
+ | Url of url
+
+ val show_missing_image_response : show missing_image_response =
+ mkShow (fn r =>
+ case r of
+ FourOhFour => "404"
+ | MysteryMan => "mm"
+ | Identicon => "identicon"
+ | Monster => "monsterid"
+ | Wavatar => "wavatar"
+ | Retro => "retro"
+ | Blank => "blank"
+ | Url u => show u)
+
+ datatype rating = G | PG | R | X
+
+ val show_rating : show rating =
+ mkShow (fn r =>
+ case r of
+ G => "g"
+ | PG => "pg"
+ | R => "r"
+ | X => "x")
+
+ type t = {
+ Size : option int,
+ Default : option missing_image_response,
+ ForceDefault : bool,
+ Rating : option rating
+ }
+
+ (* Converts a possibly null value to a component in an HTTP query string. *)
+ fun parameter_string [a] (show_a : show a)
+ (url_key : string) (value : option a)
+ : string =
+ case value of
+ None => ""
+ | Some v => strcat url_key (strcat "=" (@show show_a v))
+
+ (* Generates a list of the components in the HTTP query string corresponding
+ to [options]. *)
+ fun query_string_elements (options : t) : list string =
+ parameter_string "s" options.Size
+ :: parameter_string "d" options.Default
+ :: (case options.ForceDefault of
+ False => ""
+ | True => "f=y")
+ :: parameter_string "r" options.Rating
+ :: []
+
+ fun to_query_string (options : t) : string =
+ case (separate_with "&" (query_string_elements options)) of
+ "" => ""
+ | query_string =>
+ (* Hey, we got some. Stick a "?" at the beginning so it can be used
+ as a query string. *)
+ strcat "?" query_string
+ end
+
+fun calculate_hash email =
+ show (Hash.md5 (textBlob (String.mp tolower (String.trim email))))
+
+fun url' options email =
+ bless
+ (strcat "https://secure.gravatar.com/avatar/"
+ (strcat (calculate_hash email)
+ (Options.to_query_string options)))
+
+fun url email =
+ url' {Size = None, Default = None, ForceDefault = False, Rating = None} email
diff --git a/gravatar.urs b/gravatar.urs
new file mode 100644
index 0000000..3f922ec
--- /dev/null
+++ b/gravatar.urs
@@ -0,0 +1,60 @@
+(* Copyright 2015 the Massachusetts Institute of Technology
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed
+under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License. *)
+
+(* Given an e-mail address, converts it to a Gravatar URL. The URL points to an
+80px by 80px image containing the avatar associated with the e-mail address, or
+the blue Gravatar logo if no such avatar exists. The result URL is an HTTPS
+URL, so it won't cause any issues with use on a page served via HTTPS.
+
+This is a specialized form of [url']. *)
+val url : string -> url
+
+structure Options : sig
+ (* How Gravatar will respond if the avatar does not exist. *)
+ datatype missing_image_response =
+ FourOhFour (* by returning a 404 Not Found *)
+ | MysteryMan (* by returning a silhouetted outline of a person *)
+ | Identicon (* by producing a geometric pattern *)
+ | Monster (* by generating a MS-Paint-esque monster *)
+ | Wavatar (* by generating a MS-Paint-esque face *)
+ | Retro (* by generating an 8-bit arcade-style 'alien' (think Galaga) *)
+ | Blank (* by returning a transparent PNG *)
+ | Url of url (* by returning the specified URL *)
+
+ (* How mature your audience is. Gravatar will censor images rated more
+ maturely than you specify. *)
+ datatype rating = G | PG | R | X
+
+ (* Option struct to pass to [url']. If a field is [None], Gravatar's API
+ specifies the default, which may change as Gravatar's API updates. *)
+ type t = {
+ (* The size of the image, in pixels. Images are square, so you need
+ specify only one dimension. *)
+ Size : option int,
+
+ (* How Gravatar will respond if the avatar does not exist. [None] here
+ indicates an option unavailable in the [missing_image_response] type,
+ namely the Gravatar logo. *)
+ Default : option missing_image_response,
+
+ (* If for some reason you want Gravatar to pretend the avatar does not
+ exist, you can set this to [True]. *)
+ ForceDefault : bool,
+
+ (* How mature your audience is. *)
+ Rating : option rating
+ }
+end
+
+(* Like [url], but allows you to specify options. *)
+val url' : Options.t -> string -> url
diff --git a/lib.urp b/lib.urp
new file mode 100644
index 0000000..ebecf63
--- /dev/null
+++ b/lib.urp
@@ -0,0 +1,6 @@
+library $/crypto-hash-openssl
+allow url https://secure.gravatar.com/avatar/*
+
+$/list
+$/string
+gravatar \ No newline at end of file